An honest man is all right even if he’s an idiot…but a crook must have brains.

He that will cheat you at play, will cheat you any way.

Cheating is more honorable than stealing. 

Credulity forges more miracles than trickery could invent.

We have to distrust each other. It is our only defense against betrayal.

Men were born to lie, and women to believe them.

Grow your tree of falsehood from a small grain of truth.

The poor man is ruined as soon as he begins to ape the rich.

Children and fools cannot lie. 

Someone who knows too much finds it hard not to lie.