The greatest and most important problems of life are all fundamentally insoluble. They can never be solved, but only outgrown.
生活中最重大和最重要的问题从根本上都是无法解决的。它们永远无法被解决,只能被超越。
Don't let fear stop you from doing what you want to do.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.