The sun comes up just about as often as it goes down, in the long run, but this doesn't make its motion random.

A list is only as strong as its weakest link.

TeX has found at least one bug in every Pascal compiler it's been run on, I think, and at least two in every C compiler

The most important thing in the programming language is the name. A language will not succeed without a good name. I have recently invented a very good name and now I am looking for a suitable language.

My first program taught me a lot about the errors that I was going to be making in the future, and also about how to find errors. That's sort of the story of my life, making errors and trying to recover from them. I try to get things correct. I probably obsess about not making too many mistakes.

I can’t go to a restaurant and order food because I keep looking at the fonts on the menu.

People think that computer science is the art of geniuses but the actual reality is the opposite, just many people doing things that build on each other, like a wall of mini stones.