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

In mathematics, there are no shortcuts.

I want to leave a mark on the world, even if it’s just a tiny dot.

數學的語言是普遍的，超越了文化和語言的障礙。

"We are all prisoners of our own memories, and the key to freedom lies in understanding them."

The best investments are often the ones that are the most boring.

Consumer expectations are shifting—businesses must adapt or risk irrelevance.

The best designs solve problems you didn’t even know you had.

The heart breaks and breaks and lives by breaking.

No arts; no letters; no society; and which is worst of all, continual fear, and danger of violent death; and the life of man, solitary, poor, nasty, brutish, and short.