Mill held that one may hope that God exists, but one may not believe that God exists, as the evidence is lacking. Suppose one agrees with Mill, that faith can subsist on hope, trust, or some other non-doxastic attitude other than belief. Suppose further that one seeks to build a theistic commitment on hope. The acceptance of theistic hope provides reason to act as if theism were true, not because one believes that it is true, but because one hopes that it is. What is it to act as if theism is tr