Morale is a state of mind. It is steadfastness and courage and hope.
-- George Marshall
Do your work; not just your work and no more, but a little more for the lavishing's sake -- that little more which is worth all the rest.
-- Dean Briggs
If you can react the same way to winning and losing, that's a big accomplishment. That quality is important because it stays with you the rest of your life, and there's going to be a life after tennis that's a lot longer than your tennis life.