“The most disastrous thing that you can ever learn is your first programming language.”

“The most important thing I have learned over the years is the difference between taking one's work seriously and taking one's self seriously. The first is imperative, and the second disastrous.”

“Happiness is the most natural thing in the world when you have it, and the slowest, strangest, most impossible thing when you don't. It's like learning a foreign language: You can think about the words all you want, but you'll never be able to speak it until you suck up your courage and say them out loud.”

“Everyone knows that debugging is twice as hard as writing a program in the first place. So if you're as clever as you can be when you write it, how will you ever debug it?”

“The most important thing you can ever know, is that whatever your purpose is, that's not your only choice.”

“The most important thing we ever learn at school is the fact that the most important things can't be learned at school.”