Can somebody give me the correct quote (from Richard Feynman, 1918-1988)? I know how it ends, but only approximately how it starts (I've put the paraphrase in brackets):

"[You will fool many people in your life, but you should be careful] not to fool yourself, and you are the easiest to fool."

I have the whole quote as: The first principle is that you must not fool yourself - and you are the easiest to fool.