The surest safeguard against treason is a polity so just and equitable that no one will wish to betray it. Such an inspiration of men’s affection and men’s confidence is a more dependable guarantee of national security than the most searching catechism or the most diligent secret police. As we depart from this principle we confess our weakness, to our enemies as well as to ourselves. As we are faithful to it we realize our strength and show it to the world.

Whitney Griswold (1906–1963) American historian, educator [Alfred Whitney Griswold]

“Freedom, Security, and the University Tradition,” speech, Columbia University Bicentennial (1954-06-02)
    (Source)

Reprinted in Griswold, In the University Tradition (1957).