The essence of man is not what he is, but in what he is able to be.

Knowledge-like the sky- is never private property. No teacher has a right to withhold it from anyone who asks for it. Teaching is the art of sharing.

Racism is man's gravest threat to man - the maximum of hatred for a minimum of reason.

Wise criticism always begins with self-criticism.

In the midst of our applauding the feats of civilization, the Bible flings itself like a knife slashing our complacency; remind us that God, too, has a voice in history.

There is a built-in sense of indebtedness in the consciousness of man, an awareness of owing gratitude, or being caled upon at certain moments to reciprocate, to answer, to live in a way which is compatible with the grandeur and mystery of living.

Mundus vult decipi'—the world wants to be deceived. To live without deception presupposes standards beyond the reach of most people whose existence is largely shaped by compromise, evasion and mutual accommodation. Could they face their weakness, their vanity and selfishness, without a mask?