We can only see a short distance ahead, but we can see plenty there that needs to be done.

They say a person needs just three things to be truly happy in this world: someone to love, something to do, and something to hope for.

It is not that I'm so smart. But I stay with the questions much longer.

The measure of intelligence is the ability to change.

Knowing yourself is the beginning of all wisdom.

A wise man gets more use from his enemies than a fool from his friends.

Sometimes it's not enough to know what things mean, sometimes you have to know what things don't mean.