The most dangerous madmen are those created by religion, and people whose aim is to disrupt society always know how to make good use of them on occasion.

The man who first pronounced the barbarous word God ought to have been immediately destroyed.

Instinct guides the animal better than the man. In the animal it is pure, in man it is led astray by his reason and intelligence.

The arbitrary rule of a just and enlightened prince is always bad. His virtues are the most dangerous and the surest form of seduction: they lull a people imperceptibly into the habit of loving, respecting, and serving his successor, whoever that successor may be, no matter how wicked or stupid.

The Christian religion teaches us to imitate a God that is cruel, insidious, jealous, and implacable in his wrath.

Does anyone really know where they're going to?

All children are essentially criminal.