If you wish to experience peace, provide peace for another. If you wish to know that you are safe, cause another to know that they are safe. If you wish to better understand seemingly incomprehensible things, help another to better understand. If you wish to heal your own sadness or anger, seek to heal the sadness or anger of another.

Since periods of great change, such as the present one, come so rarely in human history, it is up to each of us to make the best use of our time to help create a happier world.

I get up every morning determined to both change the world and have one hell of a good time. Sometimes this makes planning my day difficult.
  - EB White