定理是数学的里程碑。

文学的美在于它让我们在一生中活出千种人生。

Leaders must have vision, not only seeing today's market but also foreseeing tomorrow's trends.

"Doubt is useful for a while. We must all pass through the garden of Gethsemane. If Christ played with doubt, so must we."

教育的目的不是使年轻人在任何一门科学上都变得完美，而是要打开和培养他们的思维，使他们在将来学习任何科学时都能胜任。