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

"Much human thought... is based on “a reasoning that is not in itself different from, nor founded on different principles, from that which appears” in animals."

"Nothing is more apt to surprise us than the extreme poverty of opinion, which prevails in this country, with regard to questions of morals, politics, and religion."

"Our judgements concerning moral distinctions are derived from the moral sentiment, and not from reason."

"The greatest part of mankind are governed by authority, not by reason."