"The good of mankind is the only object of moral consideration."

"I am apt to suspect the negroes and in general all other species of men (for there are four or five different kinds) to be naturally inferior to the whites."

"It is difficult for a man to speak long of himself without vanity; therefore, I shall be short."

"All belief of matter of fact or real existence is derived merely from some object present to the memory or senses, and a customary conjunction betwixt that and some other object."

"The greatest part of mankind may be divided into two classes; that of shallow thinkers, who fall short of the truth, and that of abstruse thinkers, who go beyond it."