I do not believe there is anything useful which men can know with exactitude that they cannot know by arithmetic and algebra.

You find yourself in the world, without any power, immovable as a rock, stupid, so to speak, as a log of wood.

Just as our eyes need light in order to see, our minds need ideas in order to create.

One should assiduously pursue perfection without ever claiming to attain it.

You will not dishonor the divine perfections by judgments unworthy of them, provided you never judge of Him by yourself, provided you do not ascribe to the Creator the imperfections and limitations of created beings.

When I touch a human hand, I touch heaven.

You cannot of yourself move your arm or alter your position, situation, posture, do to other men good or evil, or effect the least change in the world.