Did Isaac Newton's dog really burn his papers?
The story goes that Newton's small dog Diamond knocked over a candle and destroyed twenty years of work, and that Newton said only: âOh Diamond, Diamond, thou little knowest the mischief thou hast done.â The story is documented but contested, and in this episode of Our Next Collar, Diamond says so himself. He was there. He would rather start with the science, because the science is why any of this matters.
History remembers the famous. Their pets remember the person. On Our Next Collar, a brown tabby cat named Prince MoRee reaches the pets of history. One of them tells what they really saw. Tonight, the show's most historically self-aware guest: a dog who has had three hundred years to think about the gap between what got remembered and what actually mattered. True, surprising, and funnier than history has any right to be. Great for curious kids and the grown-ups listening with them.
This episode is fully scripted and has passed the Talking With Pets accuracy review. The recording is in production. The audio player and the full transcript will appear right here the day the episode goes live. Join the founding list below and we will write to you when it does.
From the episode
Chaco: You knocked over a candle.
Diamond: I knocked over a candle.
Chaco: And somehow that's what everyone remembers.
Diamond: It is significantly easier to understand than the calculus.
[Chaco stops writing. Considers this. Writes one word at the top of the page. Caps his pen.]
Diamond, the plague years at Woolsthorpe, the Principia, the prisms, the Royal Mint, and the disputed candle story all come from the record. The conversation is ours.
Sources and further reading
- Newton's plague years at Woolsthorpe, 1665 to 1667: gravitation, calculus, optics. Newton biographical record; Cambridge University Library, Newton papers. cudl.lib.cam.ac.uk
- Isaac Newton, Philosophiae Naturalis Principia Mathematica (1687): the law of universal gravitation and the inverse square law.
- The prism experiments (white light contains all colors; a second prism recombines them) and the first reflecting telescope. Royal Society records of Newton's optics work. royalsociety.org
- Calculus developed independently by Newton and Leibniz; the decades-long priority dispute. Documented mathematical history.
- Newton at the Royal Mint: Warden 1696, Master 1699 to 1727; the great recoinage; the pursuit and 1699 execution of counterfeiter William Chaloner. The Royal Mint Museum; Thomas Levenson, Newton and the Counterfeiter (2009). royalmintmuseum.org.uk
- The candle anecdote and âOh Diamond, Diamond, thou little knowest the mischief thou hast doneâ: present in period accounts, not recorded until long after Newton's death; the âtwenty yearsâ figure widely repeated and contested by Newton scholars. The episode flags the dispute on air.
All historical claims above were checked in the Talking With Pets accuracy review, most recently the full editorial pass of July 2026.
Did Isaac Newton's dog really burn his papers?
Maybe. Period accounts say Newton's small dog Diamond knocked over a candle that burned papers on his desk, and that Newton said "Oh Diamond, Diamond, thou little knowest the mischief thou hast done." But the story was not written down until long after Newton died, and the famous "twenty years of work" figure is contested by historians. The episode says all of this on air, which is the point: it is a lesson in how we decide what really happened.
Did an apple really hit Newton on the head?
No. Newton saw an apple fall in the garden at Woolsthorpe during the plague years and asked why things always fall down, toward the center of the earth. That question led to the law of universal gravitation and the inverse square law. The apple hitting his head is a later embellishment. Source: Newton's own accounts as recorded by contemporaries.
What did Isaac Newton actually discover?
In roughly eighteen months during the plague years of 1665 to 1667, Newton developed the foundations of universal gravitation, calculus, and the understanding that white light contains all colors. He published the gravitational theory in the Principia Mathematica in 1687, built the first reflecting telescope, and the math still works: it is used to plan spacecraft trajectories today.
Did Newton really hunt counterfeiters?
Yes. As Warden and then Master of the Royal Mint from 1696 until his death in 1727, Newton oversaw the great recoinage and personally investigated counterfeiters, gathering evidence in disguise and attending prosecutions. His most famous case, William Chaloner, took three years and ended with Chaloner's conviction in 1699. Source: Royal Mint records; Levenson, Newton and the Counterfeiter (2009).
What is Our Next Collar, and is it good for kids?
Our Next Collar is an educational history podcast for curious kids ages 6 to 10 and the grown-ups listening with them. A brown tabby cat named Prince MoRee reaches the pets of history, and one of them tells the true story of the person they knew. Every episode lists its sources and says plainly which parts are real and which are ours, which makes it a quiet lesson in how to weigh sources. It is a podcast from Talking With Pets.
Our Next Collar · the true stories only the animals saw.
Chaco, Roxie, Moose, Prince MoRee, and Armando are getting the pilot ready. Join the founding list and we will write to you when the first episodes go live. Listen with someone you like.