The improver of natural knowledge absolutely refuses to acknowledge authority, as such. For him, skepticism is the highest of duties; blind faith the one unpardonable sin.

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.

When you leave New York you ain't going anywhere.

Beware of desp'rate steps the darkest day lived till tomorrow will have pass'd away.

Belief in a Divine mission is one of the many forms of certainty that have afflicted the human race.

I love to not defend ever and to open my mind and take in what can always add to me, not take away from me.

I burn, I freeze; I am never warm. I am rigid; I forgot softness because it did not serve me.

There are many more traits that the climate deniers share with the creationists and Holocaust deniers and others who distort the truth.

Uncertainty is wondrous, and.. certainty, were it to be real, would be moral death.

I often write from memory by walking around and talking to myself. Even when I'm working at a computer I write out loud, so that I can hear the poem's rhythm.

I don't trust a man who uses the word evil eighteen times in ten minutes. If you're half evil, nothing soothes you more than to think the person you are opposed to is totally evil.

Your feelings come from where you find your hope. Where is your happiness and your significance?