The book Dynamic Programming by Richard Bellman is an important, pioneering work in which a group of problems is collected together at the end of some chapters under the heading "Exercises and Research Problems," with extremely trivial questions appearing in the midst of deep, unsolved problems. It is rumored that someone once asked Dr. Bellman how to tell the exercises apart from the research problems, and he replied: "If you can solve it, it is an exercise; otherwise it's a research problem."

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

Programs are meant to be read by humans and only incidentally for computers to execute.

A list is only as strong as its weakest link.

Let us change our traditional attitude to the construction of programs. Instead of imagining that our main task is to instruct a computer what to do, let us concentrate rather on explaining to human beings what we want a computer to do.

Beware of bugs in the above code; I have only proved it correct, not tried it.

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