I Asked for Wonder, A Spiritual Anthology from Abraham Joshua Heschel's writings (Page 61):
Something Asked
The beginning of faith is not a feeling for the mystery of living or a sense of awe, wonder, and amazement. The root of religion is the question what to do with the feeling for the mystery of living, what to do with awe, wonder, and amazement.
Religion begins with a consciousness that something is asked of us.
It is, in that tense, eternal asking in which the soul is caught and in which man's answer is elicited.
Isaiah 6 / Hebrew - English Bible / Mechon-Mamre:
.ח וָאֶשְׁמַע אֶת-קוֹל אֲדֹנָי, אֹמֵר, אֶת-מִי אֶשְׁלַח, וּמִי יֵלֶךְ-לָנוּ; וָאֹמַר, הִנְנִ שְׁלָחֵנִי
8. And I heard the voice of the Lord, saying: Whom shall I send, and who will go for us? Then I said: 'Here am I; send me.'
The irony of the first quote above it that many people avoid the word "religion" because of the connotation of religion being the ritual without anything else. People think of religious people as those who talk the talk, but don't walk the walk, those who are hypocritical. People see religion as a synonym for not having the awe, wonder, or amazement, and not doing anything in response to any they do have. Heschel, on the other hand, sees religion as the response. Isaiah has a vision, sees G-d, realizes how far he truly is from the Divine, being unclean in the presence of Holiness. He is cleansed, and his response to this experience is to volunteer to go. He needed the experience first, but he wasn't content to do nothing. Like Heschel, his response to the mystery, the awe, the wonder, the amazement, is to do something. Are we content to experience the Mystery, or will we respond to it and do something to change our world? Will we step out of Fate and Mazal, and embrace Destiny and Change?
~Muninn's Kiss