Liberal learning is both a safeguard against false ideas of freedom and a source of true ones.

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).

Quoted by John F. Kennedy in a speech at Yale University (1962-06-11). Citations of Kennedy for the quote are far more common than for Griswold's original.