On page 8 of the book, after warning against commenting too zealously, I said:
Remember, good code is like a good joke: It needs no explanation.
Except that I didn’t actually say that, at least not originally. That line is a bit of old school programming wisdom that I’ve heard many times over the years. I thought I was repeating a fairly obvious old chestnut. I certainly should have said so in the book. So, if you are the wise old coder who said this originally, my apologies.