"We only  regret the chances we didn't take." 

"The boy you punched in the hall today. Committed suicide a few minutes ago. 
That girl you called a slut in class today. She's a virgin.
The boy you called lame. He has to work every night to support his family.
That girl you pushed down the other day. She's already being abused at home.
That girl you called fat. She's starving herself.
The old man you made fun of cause of the ugly scars. He fought for our country.
The boy you made fun of for crying. His mother is dying.
You think you know them. Guess what? You DON'T!" 

I love this so much, you never know what people are going through... So think before you speak or act.