The key to immortality is first living a life worth remembering.

What we learn from history is that no one learns from history.

Where knowledge ends, religion begins.

The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.

Words that do not match deeds are unimportant.

Live your life not celebrating victories, but overcoming defeats.

To be brave is to love someone unconditionally, without expecting anything in return. To just give. That takes courage, because we don't want to fall on our faces or leave ourselves open to hurt.

The revolution lives on not in words to live for it, but in one's heart to die for it.

At the risk of seeming ridiculous, let me say that the true revolutionary is guided by a great feeling of love. It is impossible to think of a genuine revolutionary lacking this quality... We must strive every day so that this love of living humanity will be transformed into actual deeds, into acts that serve as examples, as a moving force.

No one is born hating another person because of the colour of his skin, or his background, or his religion. People must learn to hate, and if they can learn to hate, they can be taught to love, for love comes more naturally to the human heart than its opposite.

The magic of first love is our ignorance that it can ever end.

When you want to fool the world, tell the truth.

I have noticed even people who claim everything is predestined, and that we can do nothing to change it, look before they cross the road.

We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special. (1988-10-17)

I've been popular and unpopular, successful and unsuccessful, loved and loathed, and I know how meaningless it all is. Therefore, I feel free to take whatever risks I want.

But what minutes! Count them by sensation, and not by calendars, and each moment is a day, and the race a life.

Never apologize for showing feeling...When you do so, you apologize for truth.

Forgive your enemies, but never forget their names.

Today, every inhabitant of this planet must contemplate the day when this planet may no longer be habitable. Every man, woman and child lives under a nuclear sword of Damocles, hanging by the slenderest of threads, capable of being cut at any moment by accident, or miscalculation, or by madness. The weapons of war must be abolished before they abolish us. In an address before the General Assembly of the United Nations on September 25, 1961.

The Chinese use two brush strokes to write the word 'crisis'. One brush stroke stands for danger; the other for opportunity. In a crisis, be aware of the danger, but recognize the opportunity. Speech in Indianapolis, April 12, 1959

What kind of peace do we seek? Not a Pax Americana enforced on the world by American weapons of war. Not the peace of the grave or the security of the slave. I am talking about genuine peace, the kind of peace that makes life on earth worth living, the kind that enables men and nations to grow and to hope and to build a better life for their children — not merely peace for Americans but peace for all men and women — not merely peace in our time but peace for all time. Address at The American University, Washington D.C. (10 June 1963)

But why, some say, the moon? Why choose this as our goal? And they may well ask why climb the highest mountain? Why, 35 years ago, fly the Atlantic? Why does Rice play Texas? We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard, because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we are willing to accept, one we are unwilling to postpone, and one which we intend to win, and the others, too. Speech at Rice University, Houston, Texas (12 September 1962)

People never lie so much as after a hunt, during a war or before an election.

If there is ever another war in Europe, it will come out of some damned silly thing in the Balkans. Almost perfectly describes World War I, which occured well after his death.

Anyone who has ever looked into the glazed eyes of a soldier dying on the battlefield will think hard before starting a war.