[mhartl]

It's a quote from "Cargo Cult Science" (p. 313 of Surely You're Joking, Mr. Feynman!):

The first principle is that you must not fool yourself—and you are the easiest person to fool. —Richard Feynman

[rokhayakebe]

Curious. Did you remember the page of the top or did you look it up?

[mhartl]

I have every page of Surely You're Joking memorized.

Bazinga.

[rokhayakebe]

I am adding you to my list of heroes.