And what is more, biblical piety may be expressed in the form of a supreme imperative. Treat yourself as a symbol of God. In the light of this imperative we can understand the meaning of that astounding commandment: "You shall be holy, for I the Lord your God am holy." (Leviticus 19:2)
— Abraham Joshua Heschel, Moral Grandeur and Spiritual Audacity by Abraham Joshua Heschel, Susannah Heschel, editor