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.

Only passions, and great passions, can raise the soul to great things. Without them there is no sublimity, either in morals or in creativity. Art returns to infancy, and virtue becomes small-minded.

I am wholly yours - you are everything to me; we will sustain each other in all the ills of life it may please fate to inflict upon us; you will soothe my troubles; I will comfort you in yours.

Which is the greater merit, to enlighten the human race, which remains forever, or to save one's fatherland, which is perishable?

It seems to me that if one had kept silence up to now regarding religion, people would still be submerged in the most grotesque and dangerous superstition ... regarding government, we would still be groaning under the bonds of feudal government ... regarding morals, we would still be having to learn what is virtue and what is vice. To forbid all these discussions, the only ones worthy of occupying a good mind, is to perpetuate the reign of ignorance and barbarism.

Do you see this egg? With this you can topple every theological theory, every church or temple in the world.

When we know to read our own hearts, we acquire wisdom of the heartsof others.