Science may eventually explain the world of How. The ultimate world of Why may remain for contemplation, philosophy, religion.
“How can you defy fear? Fear is a human instinct, just like hunger. Whether you like it or not, you become hungry. Similarly with fear. But I have learned to train myself to live with this fear.”
“But I want you to know that what I'm doing here I'm doing as a ballplayer, a major league ballplayer.”