Quote:
Never do anything that would embarrass you if anyone knew about it.
The reason students plagiarize is because they believe they won’t get
caught. That’s simply the wrong attitude to take, about anything. This
is a very simple moral rule: if being caught would be humiliating –
even if you’re not technically doing anything wrong – don’t do it.
From:
http://www.lifehack.org/articles/productivity/lessons-from-a-plagiarist.html

I definitely try to follow this. I often think of it as: Don’t do anything you wouldn’t want to put in your blog.