The perfection of the work depends on the simplicity of the means.
你太慷慨了,不会玩弄我。如果你的感情还和去年四月一样,请立即告诉我。我的感情和愿望没有改变,但你的一句话就会让我永远沉默。
The most important thing in mathematics is to understand the concepts, not just to memorize the formulas.