You must not fool yourself — and you are the easiest person to fool.

"The first person you should be careful not to fool is yourself. Because you are the easiest person to fool".

Theoretical physicist Richard Feynman famously said, “You should never, ever fool anybody, and you are the easiest person to fool.” The moment you tell somebody something dishonest, you’ve lied to yourself. Then you’ll start believing your own lie, which will disconnect you from reality and take you down the wrong road.

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

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

The first principle is that you must not fool yourself — and you are the easiest person to fool." R. P. Feynman,

Richard Feynman as follows: “The first principle is that you must not fool yourself, and you’re the easiest person to fool.

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

Therefore do not deceive yourself! Of all deceivers fear most yourself!

Never do I deceive you, Hastings. I only permit you to deceive yourself.

Never confuse an idiot.

You can fool everyone else, but you can't fool your own mind.

The easiest person to deceive is one’s own self.

Only a fool can't be fooled.