Bad company does a man real harm, for, as the old proverb has it, if you lie down with dogs you will get up with fleas.
I have learned to kiss the waves that throw me up against the Rock of Ages.
You are what you do, not what you say you’ll do.
There’s an old saying in Tennessee — I know it’s in Texas, probably in Tennessee — that says, fool me once, shame on — shame on you. Fool me — you can’t get fooled again.