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.

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

I beg of you always to dwell upon the necessity of a thorough understanding of principles, in order to stop the vivacity of his mind, and please do not forget to meditate upon the subject of our discussion.

Attentiveness is the natural prayer of the Soul.

When I touch a human hand, I touch heaven.

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

God transforms, so to speak, this air into words, into various sounds. He makes you understand these various sounds through the modifications by which you are affected.