It is in deeds that man becomes aware of what his life really is, of his power to harm and to hurt, to wreck and to ruin; of his ability to derive joy and to bestow it upon others; to relieve and to increase his own and other people's tensions. . . . What he may not dare to think, he often utters in deeds. The heart is revealed in the deeds.
— Abraham Joshua Heschel, Seeds of the Spirit by Richard H. Bell, Barbara L. Battin