Philip Zimbardo Psychology Quotations

After doing psychology for half a century, my passion for all of it is greater than ever.

If you put good apples into a bad situation, you’ll get bad apples.

Human behavior is incredibly pliable, plastic.

I’ve always been curious about the psychology of the person behind the mask...

I've always been curious about the psychology of the person behind the mask. When someone is anonymous, it opens the door to all kinds of antisocial behavior, as seen by the Ku Klux Klan.