A brother asked an elder: „Father, how do I know whether I am truly praying or only listening to myself pray?”

The elder said: „Tomorrow, when you pray, notice who is glancing at the clock on the wall.”

After a week the brother came back and said: „Father, I caught it: the one who was praying and the one watching the clock were two different people.”

The elder smiled: „Good. Now all that is left is to find the third one, the one congratulating himself for catching it.”