最有趣的艺术是提出问题的艺术。
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.
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
The only real prison is the one we build for ourselves.