To lose one parent may be regarded as a misfortune; to lose both looks like carelessness.
失去一个父母可以看成是一种不幸;失去双亲看上去就像是一种粗心了。
数学是理性的音乐。
I don't write to be happy, I write to be free.
The scientific study of behavior must be based on objective, measurable data.
计算机体系结构的目标是使常见情况快速,罕见情况正确。
我们这个时代的挑战是在不伤害地球的情况下利用能源。