And Botany I rank with the most valuable sciences, whether we consider its subjects as furnishing the principal subsistence of life to man and beast, delicious varieties for our tables, refreshments from our orchards, the adornments of our flower-borders, shade and perfume of our groves, materials for our buildings, or medicaments for our bodies.

The evidence of [the] natural right [of expatriation], like that of our right to life, liberty, the use of our faculties, the pursuit of happiness, is not left to the feeble and sophistical investigations of reason, but is impressed on the sense of every man. We do not claim these under the charters of kings or legislators, but under the King of Kings.

The constitution has erected no such single tribunal, knowing that to whatever hands confided, with the corruption's of time and party, its members would become despots.

The clergy converted the simple teachings of Jesus into an engine for enslaving mankind and adulterated by artificial constructions into a contrivance to filch wealth and power to themselves...these clergy, in fact, constitute the real Anti-Christ.

Man once surrendering his reason, has no remaining guard against absurdities the most monstrous, and like a ship without rudder, is the sport of every wind. With such persons, gullibility, which they call faith, takes the helm from the hand of reason, and the mind becomes a wreck.

Man is an imitative animal. This quality is the germ of all education in him. From his cradle to his grave he is learning to do what he sees others do.

The happiest hours of my life have been spent in the flow of affection among friends.