I never could have done what I have done without the habits of punctuality, order, and diligence, without the determination to concentrate myself on one subject at a time.

Every mother is born of another mother. So, the legacy will continue forever.

I care not much for a man's religion whose dog and cat are not the better for it.

When you make fun of somebody who is hurt, you add insult to their injury!

I don't like formal gardens. I like wild nature. It's just the wilderness instinct in me, I guess.

This revolution, the information revoultion, is a revolution of free energy as well, but of another kind: free intellectual energy. It's very crude today, yet our Macintosh computer takes less power than a 100-watt bulb to run it and it can save you hours a day. What will it be able to do ten or 20 years from now, or 50 years from now?

Our human compassion binds us the one to the other - not in pity or patronizingly, but as human beings who have learnt how to turn our common suffering into hope for the future. 

The important thing is not to stop questioning. Curiosity has its own reason for existing.

Compromise is the easy option adopted by the inhabitants of the comfort zone.

The titanic effort that has brought liberation to South Africa, and ensured the total liberation of Africa, constitutes an act of redemption for the black people of the world.

All the adversity I've had in my life, all my troubles and obstacles, have strengthened me... You may not realize it when it happens, but a kick in the teeth may be the best thing in the world for you. 

We want deeper sincerity of motive, eater courage in speech and earnestness in action.