Man is a messenger who forgot the message.

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

A religious man is a person who holds God and man in one thought at one time, at all times, who suffers harm done to others, whose greatest passion is compassion, whose greatest strength is love and defiance of despair.

Man's sin is in his failure to live what he is. Being the master of the earth, man forgets that he is the servant of God.

He who is satisfied has never truly craved, and he who craves for the light of God neglects his ease for ardor.

People of our time are losing the power of celebration. Instead of celebrating we seek to be amused or entertained. Celebration is an active state, an act of expressing reverence or appreciation. To be entertained is a passive state--it is to receive pleasure afforded by an amusing act or a spectacle.... Celebration is a confrontation, giving attention to the transcendent meaning of one's actions.
Source: The Wisdom of Heschel