Why can't we all just get along?

Tolstoy believed happiness is possible on earth only when all men shall accomplish it. Its corner-stone is the Sermon on the Mount, whose essential teaching Tolstoy expresses in five commandments: "1. Do not be angry. "2. Do not commit adultery. "3. Do not take oaths. "4. Do not resist evil by evil. "5. Be no man's enemy." This is the negative part of the doctrine; the positive portion is contained in this single commandment: "Love God, and thy neighbour as thyself."