Faith is vision, sensitivity and attachment to God; piety is an attempt to attain such sensitivity and attachment. The gates of faith are not ajar, but the mitsvah is a key. By living as Jews we may attain our faith as Jews. We do not have faith because of deeds; we may attain faith through sacred deeds. A Jew is asked to take a leap of action rather than a leap of thought.
- Abraham Joshua Heschel