Greatness is not a function of circumstance. Greatness, it turns out, is largely a matter of conscious choice.
伟大不是环境的结果。事实证明，伟大在很大程度上是一种有意识的选择。
The only limit to our realization of tomorrow is our doubts of today.
领导力在于让他人因你的存在而变得更好，并确保这种影响在你离开后依然持续。