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.

When I touch a human hand, I touch heaven.

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

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

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.

I love good and pleasure, I hate evil and pain, I want to be happy and I am not mistaken in believing, that people, angels and even demons have those same inclinations.

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