The past is hidden somewhere outside the realm, beyond the reach of intellect, in some material object (in the sensation which that material object will give us) which we do not suspect.

计算中随机性的研究带来了计算机科学中一些最深刻的见解。

敢于在古人成就面前一争高低，这是有志气；在今人的成绩面前不虚心，这是没有气量。