For the Humanist, . . . head and heart . . . must function together. . . . The constitution of the Phillips Exeter Academy reads: 'Though goodness without knowledge . . . is weak and feeble, yet knowledge without goodness is dangerous. . . . Both united form the noblest character and lay the surest foundation of usefulness to mankind.'

The intuition of free will gives us the truth.

Human beings and their actions constitute the advancing front, the surging crest of an ongoing movement that never stops.

Since Humanism as a functioning credo is so closely bound up with the methods of reason and science, plainly free speech and democracy are its very lifeblood. For reason and scientific method can flourish only in an atmosphere of civil liberties.

The cause-effect sequences in our brains are just as determining, just as inescapable, as anywhere else in Nature.

To define twentieth-century humanism briefly, I would say that it is a philosophy of joyous service for the greater good of all humanity in this natural world and advocating the methods of reason, science, and democracy.

The highest ethical duty is often to discard the outmoded ethics of the past.