“Learning is the true imperishable riches; all other things are not riches.”

All warfare is based on deception.

Nothing exists except atoms and empty space; everything else is opinion.

The wise know the worth of money, but the rich do not know the worth of knowledge.

We must be fair — fair, starting in our own minds.

I don't study to know more, but to ignore less.

No man was ever wise by chance.

Never, ever forget history.

I measure the progress of a community by the degree of progress which women have achieved.