All are gurus to us, the wicked by their evil deeds say 'do not come near me'. The good are always good, therefore all are like gurus to us.

数学和计算机科学的交叉点是一些最激动人心的发现产生的地方。

I never saw a problem that I did not attempt to solve by mechanical means.

历史是由大大小小的时刻组成的。