色多多在线观看播放-色多多在线观看高清免费-色多多在线观看视频-色多多在线看-欧美aaaaa性bbbbb小妇-欧美aaaav免费大片

The goal of mathematics is not to solve problems, but to understand them.

我的父親是我最好的朋友和最偉大的榜樣。

You have to be willing to fail, to be wrong, to start over again with lessons learned.

我不在乎是否第一。我在乎是否最好。

智者從敵人那里學到的比愚者從朋友那里學到的還要多。

"A story has no beginning or end: arbitrarily one chooses that moment of experience from which to look back or from which to look ahead."

我認為數學家更像藝術家，而不是科學家。