数学的美在于它是永恒的,它不会改变。
The beauty of mathematics is that it is eternal, it doesn't change.
雇佣许多人去做一件复杂的事,往往是错误的。数量永远不如质量 (三个臭皮匠不一定比一个诸葛亮强),人多降低效率,增加成本。
Freedom would be not to choose between black and white but to abjure such prescribed choices.
成功不是终点,失败也不是致命的,重要的是继续前进的勇气。
I never buy anything unless I can give myself a good reason why I should buy it.