One evening toward the end of March, I was a bit late coming home. Nothing unusual: I had fallen into the hands of a learned friend, who wanted to expound to me some of his ideas about the origins of Christianity. For the first time I was obliged to think about those origins, yet I endured the long lesson to please my friend. It was cold and drizzling. Everything was unpleasant and gloomy, including the Greeks and the Jews of whom my friend spoke; still, I submitted to that suffering for a good two hours. My usual weakness! I could bet that even today I’d be equally incapable of resisting, if someone made a serious attempt to persuade me to study astronomy for a while.