Time is free, but it's priceless. You can't own it, but you can use it. You can't keep it, but you can spend it. Once you've lost it you can never get it back.
Harvey MacKay

If you cannot do great things, do small things in a great way.
Napoleon Hill

To solve the human equation, we need to add love, subtract hate, multiply good, and divide between truth and error.
Janet Coleman