The supreme quality for leadership is unquestionably integrity. Without it， no real success is possible， no matter whether it is on a section gang， a football field， in an army， or in an office.

"We live in a world where the past is always present, and the future is always uncertain."

数学中发现的快乐是无与伦比的。

我不是天才，我只是比别人更努力。