I used to climb mountains in snow and ice, hanging onto the sides of great rocks. I was describing one of my adventures to an older friend once, and when I had finished he asked me, "Why do you want to kill yourself?" I protested. I told him that the rewards I wanted were of sight, of pleasure, of the thrill of pitting my body and my skills against nature. My friend replied, "When you are as old as I am you will see that you are trying to kill yourself."