"Crime is its own punishment. " ~~ Chaim of Valozhin
"One mitzva (good deed) leads to another, just as one averah (sin) leads to another." ~~ Sayings of the Fathers
"Immorality in a home is like a worm in fruit." ~~ Talmud, Sota 3b
"All swindlers hate and besmirch each other." ~~ Moshe Leib Lilienblum
"Flee from a sin as from a snake, for if you draw nigh it will bite you! " ~~ Ben Sira 21:2
"False scales are an abomination to the Lord; but a just weight is His delight." ~~ Proverbs (Mishle) 11:1
"A thief is better than a liar, but they are both doomed." ~~ Ben Sira, Ecclesiasticus 20:25
"You shall not take vengeance!" ~~ Leviticus (Vayikra) 19:18
"If you have made bundles of bad deeds, make bundles of good ones to offset them!" ~~ Yalkut Shimoni
"Whoso asks forgiveness from a friend should not plead more than thrice." ~~ Talmud, Yoma 1624
"The breach beckons the burglar." ~~ Talmud, Sukkah
"Half repentance does not achieve even half its purpose." ~~ Reuven Alcalay