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