"Nothing is ever gained in doing what's wrong."  Wilford Woodruff

What this quote means is that every time you do something bad, you will always be left with a bad memory.An example might be when someone steals, they might feel good at first but then will be left with a bad feeling about it.They might be thinking how hard did that person worked for what was taken.When you do something bad it will then come back later on and haunt you.