Full Idea
Socrates: A criminal is worse off if he doesn't pay the penalty, and continues to do wrong without getting punished.
Gist of Idea
A criminal is worse off if he avoids punishment
Source
Plato (Gorgias [c.378 BCE], 472e)
Book Reference
Plato: 'Gorgias', ed/tr. Waterfield,Robin [OUP World's Classics 1994], p.46