Our present condition is, Legislation without law; wisdom without a plan; a constitution without a name; and, what is strangely astonishing, perfect independence contending for dependence.

To argue with a person who has renounced the use of reason is like administering medicine to the dead.

The World is my country, all mankind are my brethren, and to do good is my religion.

A body of men holding themselves accountable to nobody ought not to be trusted by anybody.

He who dares not offend cannot be honest.

[A]ll churches, whether Jewish, Christian or Muslim, are simply human inventions. They use fear to enslave us. They are a monopoly for power and profit.

If there must be trouble, let it be in my day, that my child may have peace.

The harder the conflict, the more glorious the triumph.

Those who expect to reap the blessings of freedom must, like men, undergo the fatigue of supporting it.

Religion is a history of wickedness that has served to corrupt and brutalize humankind; and, for my part, I sincerely detest it as I detest everything that is cruel.

Government, even in its best state, is but a necessary evil; in its worst state, an intolerable one.

The biggest liar in the world is They Say.

The principles of living greatly include the capacity to face trouble with courage, disappointment with cheerfulness, and trial with humility.

As long as I'm president of the United States Iran will not get a nuclear weapon. I made that clear when I came into office.

We are not smart enough to leave things to the market.

Sentimentality about nature denatures everything it touches.

The moments of the past do not remain still; they retain in our memory the motion which drew them towards the future, towards a future which has itself become the past, and draw us on in their train.

No men who really think deeply about women retain a high opinion of them; men either despise women or they have never thought seriously about them.

Impulse buying is not macho. Men rarely call the Home Shopping Network.

I am interested in climate change and other topics too. But this thing is so huge, in the worst case we are talking about the end of our civilization.

In this respect, I suppose I'm the total opposite of Garry [Kasparov]. With his very emotive body language at the [chess]board he shows and displays all his emotions. I don't.