The whole conviction of my life now rests upon the belief that loneliness, far from being a rare and curious phenomenon, peculiar to myself and to a few other solitary men, is the central and inevitable fact of human existence.

"To write is to wrestle with the demons of the past."

数学的研究就像空气或重力——它无处不在，你看不到它，但你知道它在那里。