I am not poor. Poor are those who desire many things.

You should prefer a good scientist without literary abilities than a literate one without scientific skills

Just as iron rusts from disuse, and stagnant water putrefies, or when cold turns to ice, so our intellect wastes unless it is kept in use.

Small rooms or dwellings discipline the mind, large ones weaken it.

Art is the queen of all sciences communicating knowledge to all the generations of the world.

The art of procreation and the members employed therein are so repulsive, that if it were not for the beauty of the faces and the adornments of the actors and the pent-up impulse, nature would lose the human species.

It vexes me greatly that having to earn my living has forced me to interrupt the work and to attend to small matters.