[All phenomena] are equally susceptible of being calculated, and all that is necessary, to reduce the whole of nature to laws similar to those which Newton discovered with the aid of the calculus, is to have a sufficient number of observations and a mathematics that is complex enough.

Enjoy your own life without comparing it with that of another.

One wonders why there are so many women who follow Robespierre to his home, to the Jacobins, to the Cordeliers and to the Convention. It is because the French Revolution is a religion and Robespierre is one of its sects. He is a priest with his flock... Robespierre preaches, Robespierre censures, he is furious, serious, melancholic and exalted with passion. He thunders against the rich and the great. He lives on little and has no physical needs. He has only one mission: to talk. And he talks all the time.

Men do not often dare to avow, even to themselves, the slow progress reason has made in their minds; but they are ready to follow it if it is presented to them in a lively and striking manner, and forces them to recognize it.

Enjoy your own life without comparing it with that of another for there will always be others whose lives on the face of it appear better. However just remember and focus on the fact that your life could be much worse and be grateful it isn't. No matter what others or even you may briefly think you are lucky things aren't worse so be grateful.

Under the freest constitution ignorant people are still slaves.

The penalty of death is the only one that makes an injustice absolutely irreparable; from which it follows that the existence of the death penalty implies that one is exposed to committing an irreparable injustice; from which it follows that it is unjust to establish it. This reasoning appears to us to have the force of a demonstration.