The illicit has an added charm

Forbidden things have a secret charm

There will be vice as long as there are men

Fear is not in the habit of speaking truth; when perfect sincerity is expected, perfect freedom must be allowed; nor has anyone who is apt to be angry when he hears the truth any cause to wonder that he does not hear it.

Calvin: Do you believe in the devil? You know, a supreme evil being dedicated to the temptation, corruption, and destruction of man? Hobbes: I'm not sure that man needs the help

In seasons of tumult and discord bad men have the most power; mental and moral excellence require peace and quietness.