How do you know when you see a demon or angel?

A:First, ask whether anyone you know can genuinely state that they have ever seen a demon or an angel while completely sober. If the answer is no, as I am sure it will be, then you will never see one either. Whether this is because demons and angels are too shy ever too show themselves, or because they do not really exist is for you to decide.

Answer: You'll know if you're supposed to.