Prayer should be an act of catharsis, of purgation of emotions, as well as a process of self-clarification, of examining priorities, of elucidating responsibility. Prayer not verified by conduct is an act of desecration and blasphemy. Do not take a word of prayer in vain. Our deeds must not be a refutation of our prayers.

Abraham Joshua Heschel, Moral Grandeur and Spiritual Audacity by Abraham Joshua Heschel, Susannah Heschel, editor