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.

All creatures are united to God alone in an immediate union. They depend essentially and directly upon Him. Being all alike equally impotent, they cannot be in reciprocal dependence upon one another.

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.

We are rational creatures: Our virtue and perfection is to love reason, or rather to love order.

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.

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.