I wanted to climb to the summit of challenges, attack my way through hardships as solid as granite, tempt all sorts of peril, and break through mysteries with science. I longed to inhale all sorts of experience and then explore the labyrinthine ins and outs of life that in the end cannot be guessed. I yearned for possibilities that react with each other, like the collision of uranium molecules: binding, multiplying, bursting, and dispersing in unexpected directions. I wanted to go to faraway ...