The definition of a good mathematical problem is the mathematics it generates rather than the problem itself.
人类最古老而强烈的情绪,便是恐惧;而最古老最强烈的恐惧,便是对未知的恐惧。
The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.
健康的森林意味着健康的经济;两者密不可分。
物理学的语言是数学,但其意义是哲学。