[A]nti-Semitism was rife in almost all varieties of socialism.

- Sidney Hook

The easiest rationalization for the refusal to seek the truth is the denial that truth exists.

- Sidney Hook

In contrast to totalitarianism, democracy can face and live with the truth about itself.

- Sidney Hook

To silence criticism is to silence freedom.

- Sidney Hook

Tolerance always has limits - it cannot tolerate what is itself actively intolerant.

- Sidney Hook

Fear of death has been the greatest ally of tyranny past and present.

- Sidney Hook

To serve the public interest is not the same as being a servant of public opinion.

- Sidney Hook

Before impugning an opponent's motives, even when they legitimately may be impugned, answer his arguments.

- Sidney Hook

No one who accepts the sovereignty of truth can be a foot soldier in a party or movement. He will always find himself out of step.

- Sidney Hook