I do not think much of a man who is not wiser today than he was yesterday

you should learn as if you were going to live forever, and live as if you were going to die tomorrow.

Our education should be such as to improve our minds and fit us for increased usefulness; to make us of greater service to the human family.

People disparage knowing and the intellectual life, and urge doing. I am content with knowing, if only I could know.

It has been somewhere said by Johnson, that merely to invent a story is no small effort of the human understanding.

A mind of the caliber of mine cannot derive its nutrient from cows.

A skilled listener can help people tap into their own wisdom.

The recipe for perpetual ignorance is: Be satisfied with your opinions and content with your knowledge.

In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken', and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen

Science is simply common sense at its best - that is, rigidly accurate in observation, and merciless to fallacy in logic.

Experience fails to teach where there is no desire to learn.

I'm a great believer that any tool that enhances communication has profound effects in terms of how people can learn from each other, and how they can achieve the kind of freedoms that they're interested in.