A thing is not proved just because no one has ever questioned it. What has never been gone into impartially has never been properly gone into. Hence scepticism is the first step ...

Distance is a great promoter of admiration!

I have only a small flickering light to guide me in the darkness of a thick forest. Up comes a theologian and blows it out.

In order to shake a hypothesis, it is sometimes not necessary to do anything more than push it as far as it will go.

It is not human nature we should accuse but the despicable conventions that pervert it.

Man will never be free until the last king is strangled with the entrails of the last priest.

No man has received from nature the right to give orders to others. Freedom is a gift from heaven, and every individual of the same species has the right to enjoy it as soon as ...

Only passions, great passions, can elevate the soul to great things.

Pithy sentences are like sharp nails which force truth upon our memory.

Poetry must have something in it that is barbaric, vast and wild.