All, all is theft, all is unceasing and rigorous competition in nature; the desire to make off with the substance of others is the foremost - the most legitimate - passion nature has bred into us and, without doubt, the most agreeable one.

There is no more lively sensation than that of pain; its impressions are certain and dependable, they never deceive as may those of the pleasure women perpetually feign and almost never experience.

Cruelty, very far from being a vice, is the first sentiment Nature injects in us all.

Murder is a horror, but an often necessary horror, never criminal, which it is essential to tolerate in a republican State. Is it or is it not a crime? If it is not, why make laws for its punishment? And if it is, by what barbarous logic do you, to punish it, duplicate it by another crime?

Thread of their days without pity, and in the midst of life, without ever concerning themselves with this fatal moment, living as though they were to exist for ever, they disappear into the obscure cloud of immortality, uncertain of the fate which lies in store for them.

The pleasure of the senses is always regulated in accordance with the imagination. Man can aspire to felicity only by serving all the whims of his imagination.

Nothing we can do outrages Nature directly. Our acts of destruction give her new vigour and feed her energy, but none of our wreckings can weaken her power.