The guilty man may escape, but he cannot be sure of doing so

[spiros]

The guilty man may escape, but he cannot be sure of doing so.
Epicurus

[billberg23]

Epicurus, Vatican Sayings, #7:  ἀδικοῦντα λαθεῖν μὲν δύσκολον, πίστιν δὲ λαβεῖν ὑπὲρ τοῦ λαθεῖν ἀδύνατον.
Literally:  It is difficult for a wrongdoer to escape, but impossible for him to get a guarantee for the escape.