No man has received from nature the right to command his fellow human beings.

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Fanaticism is just one step away from barbarism.

Power acquired by violence is only a usurpation, and lasts only as long as the force of him who commands prevails over that of those who obey.

From fanaticism to barbarism is only one step.

Watch out for the fellow who talks about putting things in order! Putting things in order always means getting other people under your control.

One declaims endlessly against the passions; one imputes all of man's suffering to them. One forgets that they are also the source of all his pleasures.

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

It is said that desire is a product of the will, but the converse is in fact true: will is a product of desire.

Our observation of nature must be diligent, our reflection profound, and our experiments exact. We rarely see these three means combined; and for this reason, creative geniuses are not common.

Good music is very close to primitive language.

Gaiety is a quality of ordinary men. Genius always presupposes some disorder in the machine.

The philosopher has never killed any priests, whereas the priest has killed a great many philosophers.

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

The pit of a theatre is the one place where the tears of virtuous and wicked men alike are mingled.

Morals are in all countries the result of legislation and government; they are not African or Asian or European: they are good or bad.