Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.

解释：德行不够优良的人，难以有崇高的信念与理想。才能不够突出的人，难以有渊博的知识和见解。

The past is a foreign country; they do things differently there.

under it, there is no limit to the power it can generate.