Unfaithfulness in the keeping of an appointment is an act of clear dishonesty. You may as well borrow a person's money as his time.
Clear thinking requires courage rather than intelligence.
I have known a vast quantity of nonsense talked about bad men not looking you in the face. Don't trust that conventional idea. Dishonesty will stare honesty out of countenance any day in the week, if there is anything to be got by it.