17 Things to Know About René Descartes

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The French polymath René Descartes (1596-1650) lived after the Renaissance, but he personified that age's interest in mathematics, philosophy, art, and the nature of humanity. He made numerous discoveries and argued for ideas that people continue to grapple with. (His dualist distinction between mind and the brain, for example, continues to be debated by psychologists.) Get to know him better!

1. NOBODY CALLED HIM RENÉ.

Descartes went by a nickname and often introduced himself as “Poitevin” and signed letters as “du Perron.” Sometimes, he went so far to call himself the “Lord of Perron.” That’s because he had inherited a farm from his mother’s family in Poitou, in western France.

2. SCHOOL MADE HIM FEEL DUMBER.

From the age of 11 to 18, Descartes attended one of the best schools in Europe, the Jesuit College of Henry IV in La Flèche, France. In his later work Discourse on the Method, Descartes wrote that, upon leaving school, “I found myself involved in so many doubts and errors, that I was convinced I had advanced no farther in all my attempts at learning, than the discovery at every turn of my own ignorance."

3. HIS DAD WANTED HIM TO BE A LAWYER.

Descartes’s family was chock-full of lawyers, and the budding intellectual was expected to join them. He studied law at the University of Poitiers and even came home with a law degree in 1616. But he never entered the practice. In 1618, a 22-year-old Descartes enlisted as a mercenary in the Dutch States Army instead. There, he would study military engineering and become fascinated with math and physics.

4. HE CHANGED CAREER PATHS THANKS TO A SERIES OF DREAMS.

In 1618, the Emperor of the Holy Roman Empire, Ferdinand II, attempted to impose Catholicism on anybody living within his domain. The result of this policy would be the Thirty Years' War. It would also prompt Descartes, a Catholic, to switch allegiances to a Bavarian army fighting for the Catholic side. But on his travels, he stopped in the town of Ulm. There, on the night of November 10, he had three dreams that convinced him to change his life’s path. “Descartes took from them the message that he should set out to reform all knowledge,” philosopher Gary Hatfield writes in the Stanford Encyclopedia of Philosophy.

5. HE COULD BE EASILY DISTRACTED BY BRIGHT AND SHINY OBJECTS.

In 1628, Descartes moved to the Netherlands and spent nine months doggedly working on a theory of metaphysics. Then he got distracted. In 1629, a number of false suns—called parhelia, or “sun dogs”—were seen near Rome. Descartes put his beloved metaphysics treatise on the back burner and devoted his time to explaining the phenomenon. It was a lucky distraction: It led to his work The World, or Treatise on Light.

6. HE LAID THE GROUNDWORK FOR ANALYTIC GEOMETRY ...

In 1637, Descartes published his groundbreaking Discourse on the Method, where he took the revolutionary step of describing lines through mathematical equations. According to Hatfield, “[Descartes] considered his algebraic techniques to provide a powerful alternative to actual compass-and-ruler constructions when the latter became too intricate.” You might have encountered his system in high school algebra: They’re called Cartesian coordinates.

7. ... AND THE REST OF WESTERN PHILOSOPHY.

Everybody knows Descartes for his phrase Cogito, ergo sum (which originally appeared in French as "Je pense, donc je suis"), or "I think, therefore I am." The concept appeared in many of his texts. To understand what it means, some context is helpful: At the time, many philosophers claimed that truth was acquired through sense impressions. Descartes disagreed. He argued that our senses are unreliable. An ill person can hallucinate. An amputee can feel phantom limb pain. People are regularly deceived by their own eyes, dreams, and imaginations. Descartes, however, realized that his argument opened a door for "radical doubt": That is, what was stopping people from doubting the existence of, well, everything? The cogito argument is his remedy: Even if you doubt the existence of everything, you cannot doubt the existence of your own mind—because doubting indicates thinking, and thinking indicates existing. Descartes argued that self-evident truths like this—and not the senses—must be the foundation of philosophical investigations.

8. HE'S THE REASON YOUR MATH TEACHER MAKES YOU CHECK YOUR WORK.

Descartes was obsessed with certainty. In his book Rules for the Direction of the Mind, “he sought to generalize the methods of mathematics so as to provide a route to clear knowledge of everything that human beings can know,” Hatfield writes. His advice included this classic chestnut: To solve a big problem, break it up into small, easy-to-understand parts—and check each step often.

9. HE LIKED TO HIDE.

Descartes had a motto, which he took from Ovid: “Who lives well hidden, lives well.” When he moved to the Netherlands, he regularly changed apartments and deliberately kept his address a secret. Some say it's because he simply desired privacy for his philosophical work, or that he was avoiding his disapproving family. In his book titled Descartes, philosopher A. C. Grayling makes another suggestion: "Descartes was a spy."

10. HE WASN'T AFRAID OF CRITICS. IN FACT, HE RE-PUBLISHED THEM.

When Descartes was revising his Meditations on First Philosophy [PDF], he planned to send the manuscript to “the 20 or 30 most learned theologians” for criticism—a sort of proto-peer review. He collected seven objections and published them in the work. (Descartes, of course, had the last word: He responded to each criticism.)

11. HE COULD THROW SHADE WITH THE BEST OF THEM.

In the 1640s, Descartes’s pupil and friend Henricus Regius published a broadsheet that distorted Descartes’s theory of the mind. (Which, put briefly, posits that the material body and immaterial mind are separate and distinct.) The two men had a falling out, and Descartes wrote a rebuttal with a barbed title that refused to even acknowledge Regius’s manifesto by name: It was simply called “Comments on a Certain Broadsheet.”

12. HE NEVER BELIEVED MONKEYS COULD TALK.

There’s a “fun fact” parading around that suggests Descartes believed monkeys and apes could talk. He believed no such thing. According to the Stanford Encyclopedia of Philosophy, Descartes denied that animals were even conscious, let alone capable of speech. The factoid comes from a misreading of a letter Descartes had written in 1646, in which he attributed the belief to “savages.”

13. HE TOTALLY HAD THE HOTS FOR CROSS-EYED WOMEN.

In a letter to Queen Christina of Sweden, Descartes explained that he had a cross-eyed playmate as a child. “I loved a girl of my own age ... who was slightly cross-eyed; by which means, the impression made in my brain when I looked at her wandering eyes was joined so much to that which also occurred when the passion of love moved me, that for a long time afterward, in seeing cross-eyed women, I felt more inclined to love them than others.”

14. WHEN HE MET BLAISE PASCAL, THEY GOT INTO AN ARGUMENT ... ABOUT VACUUMS.

In 1647, a 51-year-old Descartes visited the 24-year-old prodigy and physicist Blaise Pascal. Their meeting quickly devolved into a heated argument over the concept of a vacuum—that is, the idea that air pressure could ever be reduced to zero. (Descartes said it was impossible; Pascal disagreed.) Later, Descartes wrote a letter that, depending on your translation, said that Pascal had “too much vacuum in his head.”

15. HIS WORK WAS BANNED BY THE CATHOLIC CHURCH.

Back in the late 1630s, the theologian Gisbert Voetius had convinced the academic senate of the University of Utrecht to condemn the philosopher’s work. (Descartes was Catholic, but his suggestion that the universe began as a “chaotic soup of particles in motion,” in Hatfield's words, was contrary to orthodox theology.) In the 1660s, his works were placed on the church’s Index of Prohibited Books.

16. HE REGULARLY SLEPT UNTIL NOON (AND TRYING TO BREAK THE HABIT MIGHT HAVE KILLED HIM).

Descartes was not a morning person. He often snoozed 12 hours a night, from midnight until lunchtime. In fact, he worked in bed. (Sleep, he wisely wrote, was a time of “nourishment for the brain.”) But according to the Journal of Historical Neuroscience, he may have had a sleep disorder that helped end his life. A year before his death, Descartes had moved to Stockholm to take a job tutoring Queen Christina, a devoted early-riser who forced Descartes to change his sleep schedule. Some believe the resulting sleep deprivation weakened his immune system and eventually killed him.

17. HIS SKELETON HAS TRAVELED FAR AND WIDE.

Descartes died in Stockholm in 1650 and was buried outside the city. Sixteen years later, his corpse was exhumed and taken to Paris. During the French Revolution, his bones were moved to an Egyptian sarcophagus at the Museum of French Monuments. Decades later, when plans were made to rebury Descartes in an abbey, officials discovered that most of his bones—including his skull—were missing. Shortly after, a Swedish scientist discovered a newspaper advertisement attempting to sell the polymath’s noggin [PDF]. Today, his head is in a collection at the Musée de l’Homme in Paris.

The ChopBox Smart Cutting Board Has a Food Scale, Timer, and Knife Sharper Built Right Into It

ChopBox
ChopBox

When it comes to furnishing your kitchen with all of the appliances necessary to cook night in and night out, you’ll probably find yourself running out of counter space in a hurry. The ChopBox, which is available on Indiegogo and dubs itself “The World’s First Smart Cutting Board,” looks to fix that by cramming a bunch of kitchen necessities right into one cutting board.

In addition to giving you a knife-resistant bamboo surface to slice and dice on, the ChopBox features a built-in digital scale that weighs up to 6.6 pounds of food, a nine-hour kitchen timer, and two knife sharpeners. It also sports a groove on its surface to catch any liquid runoff that may be produced by the food and has a second pull-out cutting board that doubles as a serving tray.

There’s a 254nm UVC light featured on the board, which the company says “is guaranteed to kill 99.99% of germs and bacteria" after a minute of exposure. If you’re more of a traditionalist when it comes to cleanliness, the ChopBox is completely waterproof (but not dishwasher-safe) so you can wash and scrub to your heart’s content without worry. 

According to the company, a single one-hour charge will give you 30 days of battery life, and can be recharged through a Micro USB port.

The ChopBox reached its $10,000 crowdfunding goal just 10 minutes after launching its campaign, but you can still contribute at different tiers. Once it’s officially released, the ChopBox will retail for $200, but you can get one for $100 if you pledge now. You can purchase the ChopBox on Indiegogo here.

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11 Fascinating Facts About Tamagotchi

Tamagotchi is the toy that launched a thousand digital pet competitors.
Tamagotchi is the toy that launched a thousand digital pet competitors.
Chesnot/Getty Images News

They blooped and beeped and ate, played, and pooped, and, for ‘90s kids, the egg-shaped Tamagotchi toys were magic. They taught the responsibility of tending to a “pet,” even though their shrill sounds were annoying to parents and teachers and school administrators. Nearly-real funerals were held for expired Tamagotchi, and they’ve even been immortalized in a museum (of sorts). Here are 11 things you should know about the keychain toy that was once stashed in every kid’s backpack.

1. The idea for the Tamagotchi came from a female office worker at Bandai.

Aki Maita was a 30-year-old “office lady” at the Japanese toy company Bandai when inspiration struck. She wanted to create a pet for kids—one that wouldn't bark or meow, make a mess in the house, or lead to large vet bills, according to Culture Trip. Maita took her idea to Akihiro Yokoi, a toy designer at another company, and the duo came up with a name and backstory for their toy: Tamagotchis were aliens, and their egg served as protection from the Earth’s atmosphere. They gave prototype Tamagotchis to high school girls in Shibuya, and tweaked and honed the design of the toy based on their feedback.

2. The name Tamagotchi is a blend of two Japanese words.

The name Tamagotchi is a mashup between the Japanese words tamago and tomodachi, or egg and friend, according to Culture Trip. (Other sources have the name meaning "cute little egg" or "loveable egg.")

3. Tamagotchis were released in Japan in 1996.

A picture of a tamagotchi toy.
Tamagotchis came from a faraway planet called "Planet Tamagotchi."
Museum Rotterdam, Wikimedia Commons//CC BY-SA 3.0

Bandai released the Tamagotchi in Japan in November 1996. The tiny plastic keychain egg was equipped with a monochrome LCD screen that contained a “digital pet,” which hatched from an egg and grew quickly from there—one day for a Tamagotchi was equivalent to one year for a human. Their owners used three buttons to feed, discipline, play with, give medicine to, and clean up after their digital pet. It would make its demands known at all hours of the day through bloops and bleeps, and owners would have to feed it or bathe it or entertain it.

Owners that successfully raised their Tamagotchi to adulthood would get one of seven characters, depending on how they'd raised it; owners that were less attentive faced a sadder scenario. “Leave one unattended for a few hours and you'll return to find that it has pooped on the floor or, worse, died,” Wired wrote. The digital pets would eventually die of old age at around the 28-day mark, and owners could start fresh with a new Tamagotchi.

4. Tamagotchis were an immediate hit.

The toys were a huge success—4 million units were reportedly sold in Japan during their first four months on shelves. By 1997, Tamagotchis had made their way to the United States. They sold for $17.99, or around $29 in today's dollars. One (adult) reviewer noted that while he was "drawn in by [the Tamagotchi's] cleverness," after several days with the toy, "the thrill faded quickly. I'm betting the Tamagotchi will be the Pet Rock of the 1990s—overwhelmingly popular for a few months, and then abandoned in the fickle rush to some even cuter toy."

The toy was, in fact, overwhelmingly popular: By June 1997, 10 million of the toys had been shipped around the world. And according to a 2017 NME article, a whopping 82 million Tamagotchi had been sold since their release into the market in 1997.

5. Aki Maita and Akihiro Yokoi won an award for inventing the Tamagotchi.

In 1997, the duo won an Ig Nobel Prize in economics, a satiric prize that’s nonetheless presented by Nobel laureates at Harvard, for "diverting millions of person-hours of work into the husbandry of virtual pets" by creating the Tamagotchi.

6. Tamagotchis weren't popular with teachers.

Some who grew up with Tamagotchi remember sneaking the toys into school in their book bags. The toys were eventually banned in some schools because they were too distracting and, in some cases, upsetting for students. In a 1997 Baltimore Sun article titled “The Tamagotchi Generation,” Andrew Ratner wrote that the principal at his son’s elementary school sent out a memo forbidding the toys “because some pupils got so despondent after their Tamagotchis died that they needed consoling, even care from the school nurse.”

7. One pet cemetery served as a burial ground for expired Tamagotchi.

Terry Squires set aside a small portion of his pet cemetery in southern England for dead Tamagotchi. He told CNN in 1998 that he had performed burials for Tamagotchi owners from Germany, Switzerland, France, the United States, and Canada, all of whom ostensibly shipped their dead by postal mail. CNN noted that "After the Tamagotchis are placed in their coffins, they are buried as mourners look on, their final resting places topped with flowers."

8. There were many copycat Tamagotchi.

The success of the Tamagotchi resulted in both spin-offs and copycat toys, leading PC Mag to dub the late ’90s “The Golden Age of Virtual Pets.” There was the Digimon, a Tamagotchi spin-off by Bandai that featured monsters and was marketed to boys. (There were also Tamagotchi video games.) And in 1997, Tiger Electronics launched Giga Pets, which featured real animals (and, later, dinosaurs and fictional pets from TV shows). According to PC Mag, Giga Pets were very popular in the United States but “never held the same mystique as the original Tamagotchi units.” Toymaker Playmates's Nano Pets were also a huge success, though PC Mag noted they were “some of the least satisfying to take care of."

9. Rare Tamagotchis can be worth a lot of money.

According to Business Insider, most vintage Tamagotchis won't fetch big bucks on the secondary market. (On eBay, most are priced at around $50.) The exception are rare editions like “Yasashii Blue” and “Tamagotchi Ocean,” which go for $300 to $450 on eBay. As Complex notes, "There were over 40 versions (lines) of Tamagotchi released, and each line featured a variety of colors and variations ... yours would have to be one of the rarest models to be worth the effort of resale."

10. A new generation of Tamagotchis were released in 2017 for the toy's 20th anniversary.

The 2017 re-release of the Tamagotchi in its packaging.
Bandai came to the aid of nostalgic '90s kids when it re-released a version of the original Tamagotchis for the toy's 20th anniversary.
Chesnot/Getty Images

In November 2017, Bandai released a 20th anniversary Tamagotchi that, according to a press release [PDF], was "a first-of-its-kind-anywhere exact replica of the original Tamagotchi handheld digital pet launched ... in 1996." However, as The Verge reported, the toys weren't an exact replica: "They're about half the size, the LCD display is square rather than rectangle, and those helpful icons on the top and bottom of the screen seem to be gone now." In 2019, new Tamagotchis were released; they were larger than the originals, featured full-color displays, and retailed for $60.

11. The original Tamagotchi’s sound has been immortalized in a virtual museum.

The Museum of Endangered Sounds is a website that seeks to immortalize the digital sounds that become extinct as we hurtle through the evolution of technology. “The crackle of a dial-up modem. The metallic clack of a 3.5-inch floppy slotting into a Macintosh disk drive. The squeal of the newborn Tamagotchi. They are vintage sounds that no oldies station is ever going to touch,” The Washington Post wrote in a 2012 profile of the museum. So, yes, the sound of that little Tamagotchi is forever preserved, should it someday, very sadly, cease to exist completely.