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

成功不在于你取得了多少成就，而在于你激勵他人取得了多少成就。

Quality should never be compromised for short-term gains.

The interplay between discrete and continuous mathematics is where some of the most interesting problems lie.

記憶是一件奇怪的事情。它不像我想象的那樣運作。我們不是要記住一切，而是要忘記，繼續前進。

The internet is a tool that can be used for good or bad. It's up to us to decide how we use it.

I think the best thing you can do is to be grateful for what you have.

The weight of the material determines the form.

歷史學家是一個向后看的先知。