Nothing is more intolerable than to have to admit to yourself your own errors.

There is a wisdom of the head, and... there is a wisdom of the heart.

Let him who would move the world first move himself.

Talent is God given. Be humble. Fame is man-given. Be grateful. Conceit is self-given. Be careful.

The greatest minds are capable of the greatest vices as well as of the greatest virtues.

If we do not lay out ourselves in the service of mankind whom should we serve?

Turn your wounds into wisdom.

Time flies over us, but leaves its shadow behind.

Those who cannot work with their hearts achieve but a hollow, half-hearted success that breeds bitterness all around.

All the great things are simple, and many can be expressed in a single word: freedom; justice; honor; duty; mercy; hope.

A single lie destroys a whole reputation of integrity.

Where you stand depends on where you sit.

To kill an error is as good a service as, and sometimes even better than, the establishing of a new truth or fact

For we walk by faith, not by sight

What lies behind us and what lies ahead of us are tiny matters compared to what lives within us.

Don't criticize what you can't understand.

Instinct is a marvellous thing. It can neither be explained nor ignored.

Each day is a little life; every waking and rising a little birth; every fresh morning a little youth; every going to rest and sleep a little death.

It is not enough to have a good mind; the main thing is to use it well.

The greatest deception men suffer is from their own opinions.

A man may imagine things that are false, but he can only understand things that are true.