我相信偉大的教師就是偉大的藝術(shù)家，而且這樣的藝術(shù)家和其他任何偉大的藝術(shù)家一樣稀少。教學(xué)甚至可能是最偉大的藝術(shù)，因為它的媒介是人的思想和精神。
The only way to do great work is to love what you do.
Memories， even your most precious ones， fade surprisingly quickly. But I don’t go along with that. The memories I value most， I don’t ever see them fading.
The advancement of mathematics is through generalization.
We are all detectives of our own past.
It always seems impossible until it's done.
The first prerequisite of a sound foreign policy is a clear understanding of one's own values.