I will tell you how to become rich. Close the doors. Be fearful when others are greedy. Be greedy when others are fearful. Lecturing to a group of students at Columbia U. He was 21 years old.

Have no fear of perfection. You will never reach it.

I don't think there would be many jokes, if there weren't constant frustration and fear and so forth. It's a response to bad troubles like crime. October 2006

I know fear is an obstacle for some people, but it is an illusion to me…. Failure always made me try harder next time.

So let us begin anew — remembering on both sides that civility is not a sign of weakness, and sincerity is always subject to proof. Let us never negotiate out of fear. But let us never fear to negotiate. Inaugural Address (20 January 1961)

Have no fear of moving into the unknown. Simply step out fearlessly knowing that I am with you, therefore no harm can befall you; all is very, very well. Do this in complete faith and confidence.

When I was a naive young recruit in Spain, I used to wonder why soldiers bayoneted oil paintings, shit the hoses off statues and defecated into grand pianos. I now understand: it was to teach civilians the deepest sort of respect for men in uniform - uncontrollable fear.