Dear Durant You ask me, in brief, what satisfaction I get out of life, and why I go on working. I go on working for the same reason that a hen goes on laying eggs. There is in every living creature an obscure but powerful impulse to active functioning. Life demands to be lived. Inaction, save as a measure of recuperation between bursts of activity, is painful and dangerous to the healthy organism—in fact, it is almost impossible. Only the dying can be really idle. The precise form of an individual’s activity is determined, of course, by the equipment with which he came into the world. In other words, it is determined by his heredity. I do not lay eggs, as a hen does, because I was born without any equipment for it. For the same reason I do not get myself elected to Congress, or play the violoncello, or teach metaphysics in a college, or work in a steel mill. What I do is simply what lies easiest to my hand. It happens that I was born with an intense and insatiable interest in ideas,