Think small. If you think small, you'll stay small. If you think big, you'll stay big.

The true measure of success is impact, not just income.

"When you do something best in life, you don’t really want to give that up – and for me it’s tennis."

It seems to me that if you or I must choose between two courses of thought or action, we should remember our dying and try so to live that our death brings no pleasure to the world.