The greatest proof of Christianity for others is not how far a man can logically analyze his reasons for believing, but how far in practice he will stake his life on his belief.
Prayer doesn't work because someone out there is listening, it works because someone in here is listening. I've paid attention. I've pictured what I want to happen in my life. I've meditated extensively on my family, my future, my past actions and what did and didn't work for me about them.
Most of the money given by rich people in "charity" is made up of conscience money, "ransom," political bribery, and bids for titles.... One buys moral credit by signing a cheque, which is easier than turning a prayer wheel.