There are truths on this side of the Pyranees, which are falsehoods on the other.
Habit is a second nature that destroys the first. But what is nature? Why is habit not natural? I am very much afraid that nature itself is only a first habit, just as habit is a second nature.
True nature being lost, everything becomes its own nature; as the true good being lost, everything becomes its own true good.
What is man in nature? Nothing in relation to the infinite, all in relation to nothing, a mean between nothing and everything
Nature is an infinite sphere whose center is everywhere and whose circumference is nowhere
Nature has made all her truths independent of one another. Our art makes one dependent on the other. But this is not natural. Each keeps its own place.
Custom is our nature. What are our natural principles but principles of custom?
Man's true nature being lost, everything becomes his nature; as, his true good being lost, everything becomes his good.
Nature is an infinite sphere of which the center is everywhere and the circumference nowhere.
Our nature consists in motion; complete rest is death.
Our soul is cast into a body, where it finds number, time, dimension. Thereupon it reasons, and calls this nature necessity, and can believe nothing else.
The least movement is of importance to all nature. The entire ocean is affected by a pebble.
Two things control men's nature, instinct and experience.
Nature has set us so well in the center, that if we change one side of the balance, we change the other also. I act. This makes me believe that the springs in our brain are so adjusted that he who touches one touches also its contrary.
Man is to himself the most wonderful object in nature; for he cannot conceive what the body is, still less what the mind is, and least of all how a body should be united to a mind. This is the consummation of his difficulties, and yet it is his very being.