All the wisdom of the world is not to be found in one little academic department.

I've learned that people will forget what you said, people will forget what you did, but people will never forget how you made them feel.

The unexamined life is not worth living.

It is only ideas gained from walking that have any worth.

A genius is not just answering questions but asking questions that nobody else thought to ask.

Give me six hours to chop down a tree and I will spend the first four hours sharpening the axe.

No one can defeat a powerful mind.

Life is never made unbearable by circumstances, but only by lack of meaning and purpose.