选择理论忽略了大多数人类行为是基于习惯而非精心计算的决策这一事实。
领导力意味着为了更美好的明天而在今天做出艰难的决定。
Art is the most intense mode of individualism that the world has known.
The proof of a system's value is its existence.
A mathematical proof is a poem written in the language of logic.