Doctors are always working to preserve our health and cooks to destroy it, but the latter are the more often successful.

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.

My ideas are my whores.

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

Does anyone really know where they're going to?

I picture the vast realm of the sciences as an immense landscape scattered with patches of dark and light. The goal towards which we must work is either to extend the boundaries of the patches of light, or to increase their number. One of these tasks falls to the creative genius; the other requires a sort of sagacity combined with perfectionism.

To be born in imbecility, in the midst of pain and crisis; to be the plaything of ignorance, error, need, sickness, wickedness, and passions; to return step by step to imbecility, from the time of lisping to that of doting; to live among knaves and charlatans of all kinds; to die between one man who takes your pulse and another who troubles your head; never to know where you come from, why you come and where you are going! That is what is called the most important gift of our parents and nature. Life.