Prayer is often a temptation to bank on a miracle of God instead of on a moral issue, i.e., it is much easier to ask God to do my work than it is to do it myself. Until we are disciplined properly, we will always be inclined to bank on God's miracles and refuse to do the moral thing ourselves. It is our job, and it will never be done unless we do it.
It would be a great advantage to some schoolmasters if they would steal two hours a day from their pupils, and give their own minds the benefit of the robbery.