Buzz Aldrin

Supplying fuel for a Mars expedition from the lunar surface is often suggested, but it's hard to make it pay off - Moon bases are expensive, and just buying more rockets to launch fuel from Earth is relatively cheap.

O my God, what must a soul be like when it is in this state! It longs to be all one tongue with which to praise the Lord. It utters a thousand pious follies, in a continuous endeavor to please Him who thus possesses it.