Show me a man or woman alone and I’ll show you a saint. Give me two and they’ll fall in love. Give me three and they’ll invent the charming thing we call “society.” Give me four and they’ll build a pyramid. Give me five and they’ll make one an outcast. Give me six and they’ll reinvent prejudice. Give me seven and in seven years they’ll reinvent warfare.

Stephen King, The Stand

The first time someone sent an insulting letter to someone else instead of throwing a rock at him was the day civilization began.