The most difficult thing is to be simple.
最难的事情是变得简单。
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.
Human cognition is best understood as a hierarchy of information processing levels.
勇气是在压力下的优雅。
真相很少纯粹，也绝不简单。
每一次失败都是通往成功的垫脚石，只要我们从中学习。