“We make allowance for a certain degree of selfishness in men; because we know it to be inseparable from human nature, and inherent in our frame and constitution. By this reflexion we correct those sentiments of blame, which so naturally arise upon any opposition.”

How can we satisfy ourselves without going on in infinitum? And, after all, what satisfaction is there in that infinite progression?

What a peculiar privilege has this little agitation of the brain which we call ‘thought’

It is an absurdity to believe that the Deity has human passions, and one of the lowest of human passions, a restless appetite for applause

Tis not unreasonable for me to prefer the destruction of the whole world to the scratching of my finger.

The bigotry of theologians is a malady which seems almost incurable.

I weigh the one miracle against the other and according to the superiority which I discover, I pronounce my decision.

The science of man is the only solid foundation for the other sciences.

Carelessness and in-attention alone can afford us any remedy. For this reason I rely entirely upon them.

But the greatest part of mankind float between vice and virtue.

I never knew anyone, that examined and deliberated about nonsense, who did not believe it before the end of his enquiries.

Where am I, or what? From what causes do I derive my existence, and to what condition shall I return?

Reason is, and ought only to be the slave of the passions, and can never pretend to any other office than to serve and obey them.

It is difficult for a man to speak long of himself without vanity.

Nothing is more usual than for philosophers to encroach upon the province of grammarians; and to engage in disputes of words, while they imagine that they are handling controversies of the deepest importance and concern

The gazing populace receive greedily, without examination, whatever soothes superstition and promotes wonder.

In public affairs men are often better pleased that the truth, though known to everybody, should be wrapped up under a decent cover than if it were exposed in open daylight to the eyes of all the world.