
Acceptance Speech as the 1964 Republican Presidential candidate. Variants and derivatives of this that are often quoted include:
Extremism in defense of liberty is no vice. Tolerance in the face of tyranny is no virtue.
Extremism in the defense of liberty is no vice. And moderation in the pursuit of justice is no virtue.
Moderation in the protection of liberty is no virtue; extremism in the defense of freedom is no vice.