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没有食物,人类最多只能活几个星期;没有它,社会正义的所有其他组成部分都毫无意义。
你经历得越多,学到的就越多。
每一个数学问题都是一个等待解决的谜题,每一个解答都是向理解现实结构迈进的一步。
My blindness is not a tragedy, but just another way of seeing.
The beauty of mathematics lies not in its complexity but in its simplicity and the way it reveals hidden truths.
The natural price of labor is that price which is necessary to enable the laborers, one with another, to subsist and to perpetuate their race, without either increase or diminution.