I am too much of a sceptic to deny the possibility of anything...

The great tragedy of science - the slaying of a beautiful hypothesis by an ugly fact.

Only one absolute certainty is possible to man, namely that at any given moment the feeling which he has exists.

The Bible has been the Magna Charta of the poor and of the oppressed.

If a little knowledge is dangerous, where is the man who has so much as to be out of danger?

It is not who is right, but what is right, that is of importance.

Thoughtfulness for others, generosity, modesty, and self-respect are the qualities which make a real gentleman or lady.

God give me strength to face a fact though it slay me.

Life is too short to occupy oneself with the slaying of the slain more than once.

The secret of genius is to carry the spirit of childhood into maturity.

Make up your mind to act decidedly and take the consequences. No good is ever done in this world by hesitation.

Through enjoyment we endure.

Nothing is so common as unsuccessful men with talent. They lack only determination.

I'm an algebra liar. I figure two good lies make a positive.

I've always been completely autocratic. I've never learned to be diplomatic or democratic.

There is a source of power in each of us that we don't realize until we take responsibility.

If you are ready for mystical experiences, you have them.

I'm too conceited for therapy.

In the meanest hut is a romance, if you knew the hearts there.

An inward sincerity will of course influence the outward deportment; but where the one is wanting, there is great reason to suspect the absence of the other.

We have a president for whom English is a second language. He's like 'We have to get rid of dictators,' but he's pretty much one himself.