Sin is a thing that writes itself across a man's face. It cannot be concealed. People talk sometimes of secret vices, there are no such things. If a wretched man has a vice, it shows itself in the lines of his mouth, the droop of his eyelids, the moulding of his hands even.
The liar at any rate recognizes that recreation, not instruction, is the aim of conversation, and is a far more civilized being than the blockhead who loudly expresses his disbelief in a story which is told simply for the amusement of the company.