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 most beautiful arrangement is a pile of things poured out at random.

In business, you have to be willing to take risks. If you don't take risks, you won't achieve anything.

寫作是一種自由的行為，是表達無法表達之物的方式。

I believe that the most important single thing, beyond discipline and creativity, is daring to dare.

Combinatorics is like the art of counting without actually counting.

The best arguments in the world won't change a person's mind. The only thing that can do that is a good story.

Cryptography is about communication in the presence of adversaries.