Happiness is ideal, it is the work of the imagination.

Never lose sight of the fact that all human felicity lies in man's imagination, and that he cannot think to attain it unless he heeds all his caprices. The most fortunate of persons is he who has the most means to satisfy his vagaries.

Lust is to the other passions what the nervous fluid is to life; it supports them all, lends strength to them all ambition, cruelty, avarice, revenge, are all founded on lust.

Can we become other than what we are?

The impossibility of outraging nature is the greatest anguish man can know.

Any punishment that does not correct, that can merely rouse rebellion in whoever has to endure it, is a piece of gratuitous infamy which makes those who impose it more guilty in the eyes of humanity, good sense and reason, nay a hundred times more guilty than the victim on whom the punishment is inflicted.

There are thorns everywhere, but along the path of vice, roses bloom above them.