It is tact that is golden, not silence.

Nothing fixes a thing so intensely in the memory as the wish to forget it.

The ultimate authority must always rest with the individual's own reason and critical analysis.

Real knowledge is to know the extent of one's ignorance.

Anger begins in folly, and ends in repentance.

Kind words don't cost much. Yet they accomplish much.

It is a wise man that does know the contented man is never poor, whilst the discontented man is never rich.

It is not titles that honor men, but men that honor titles.

Knowing yourself is the beginning of all wisdom.

We may encounter many defeats but we must not be defeated.

Language is very powerful. Language does not just describe reality. Language creates the reality it describes.

You are braver than you believe, stronger than you seem, and smarter than you think.

Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.

The most certain sign of wisdom is cheerfulness.

The path to success is to take massive, determined action.

The secret of life, though, is to fall seven times and to get up eight times.

What can't be cured must be endured.

Intelligence is the ability to adapt to change.

Science may set limits to knowledge, but should not set limits to imagination.

Life's battles don't always go to the stronger or faster man. But sooner or later, the man who wins is the man who thinks he can.

Admiration is the daughter of ignorance.