You: Faith is only worthwhile when one has reason for it.

Aaron: The only path to true happiness is through faith in God.

You: If I should have faith in order to be happy, then perhaps I will have faith that God is my Uncle Charley. That would make both me and my Uncle Charley happy.

Aaron: That is a silly example. Such a faith is based on obvious untruths and would lead you to make incorrect decisions.

You: I feel the same way about your faith.