War is an ugly thing， but not the ugliest of things； the decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth war is much worse.

云计算让计算像水电一样随手可得。

量化宽松的问题在于它在实践中有效，但在理论上却行不通。

如果你的艺术不能挑战你自己，它也无法挑战他人。

科学的全部不过就是日常思考的提炼。