"I have said more than once, that I hold space to be something merely relative, as time is; that I hold it to be an order of coexistences, as time is an order of successions."

"imaginary numbers are a fine and wonderful resource of the divine intellect, almost an amphibian between being and non-being."

"I am not one of those people whose minds are so limited that they are unable to conceive of more than one kind of substance."

"The knowledge which we have of God and of ourselves shows us that He is the greatest and the best of beings; and from this it follows that He must have chosen the best possible plan in producing the u…"

"It is not the eye that sees, but the mind."