领导力是关于做出艰难的决定并坚持它们，即使这些决定不受欢迎。

You are too generous to trifle with me. If your feelings are still what they were last April, tell me so at once. My affections and wishes are unchanged, but one word from you will silence me on this subject for ever.

剑鞘保护剑的锋利，自己却满足於它自己的迟钝。