A thought is an idea in transit.

Intelligence plus character-that is the goal of true education.

A cynic is a man who knows the price of everything, and the value of nothing.

What is freedom of expression? Without the freedom to offend, it ceases to exist.

The white man is very clever. He came quietly and peaceably with his religion. We were amused at his foolishness and allowed him to stay. Now he has won our brothers, and our clan can no longer act like one. He has put a knife on the things that held us together and we have fallen apart.

Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.

Courage, conviction and confidence.

Patience is a virtue, and I'm learning patience. It's a tough lesson.

A witty saying proves nothing.

It is possible to fly without motors, but not without knowledge and skill.

With educated people, I suppose, punctuation is a matter of rule; with me it is a matter of feeling. But I must say I have great respect for the semi-colon; it's a useful little chap.

Education is a human right with immense power to transform. On its foundation rest the cornerstones of freedom, democracy and sustainable human development.

Technology is just a tool. In terms of getting the kids working together and motivating them, the teacher is the most important.

Industrialize or perish.

If I have seen further it is by standing on the shoulders of Giants.

If you want the present to be different from the past, study the past.

Common sense is the collection of prejudices acquired by age eighteen.

I have no special talents. I am only passionately curious.

What we know is a drop, what we don't know is an ocean.

Know what you are talking about.

The deepest sin against the human mind is to believe things without evidence.