It is the people who can do nothing who find nothing to do, and the secret to happiness in this world is not only to be useful, but to be forever elevating one's uses.
“I put my career in second place throughout both my marriages and it suffered. I don't regret it. You make choices. If you want a good marriage, you must pay attention to that. If you want to be independent, go ahead. You can't have it all.”
“I haven't played a chess match for several decades. At one point I lost most of my chess games. Then I realized many of my competitors were memorizing the best moves and I was unwilling to do this.”