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

Violence is not just physical; it's embedded in our systems and structures.

You are not only responsible for what you say, but also for what you do not say.

質量不是命運；它是一種選擇。

I try to make the invisible visible.

"The stories we tell shape the world we live in."

Mathematics is the art of asking the right questions and then finding their answers.