This. I need this. So very much. Not that I have a lot of rude people in my life, but it's something that I think everyone would like to say. Note: it's not available anymore, but it wouldn't be hard to make, print and frame. Would also be a fun saying for a cross-stitch sampler.
Never look down on anyone! Treat every person as you want to be treated and don't judge when you really know nothing about the other person . Remember there is always at least two sides to every story, where the truth lies could be hard to tell. Always keep an open positive mind and help a person out when needed. :)