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 world is dark, and light is precious.

Language shapes the way we think, and determines what we can think about.

At the end of the day, it’s about connecting with people, not awards.

The best way to predict the future of our forests is to create it.

To one who has faith, no explanation is necessary. To one without faith, no explanation is possible.

解決數學問題的喜悅是無與倫比的；這是純粹的智力勝利的時刻。