13. Begging the Question (Petitio Principii): This is when the conclusion is assumed in one of the premises, making the argument circular. For

Vague and ambiguous words and expressions wander about among various ideas instead of settling definitely upon one or another particular idea.

The most effective technique for subduing the moral imagination is to teach it to mistake the contradictory for the paradoxical, and thereby to accept incoherence as profundity, or moral idiocy as spiritual subtlety.