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 essence of mathematics lies in its freedom.

準確的觀察力常被沒有這種能力的人稱為憤世嫉俗。

The essence of a good life is to live without any sense of hurry.

What you do makes a difference, and you have to decide what kind of difference you want to make.

跨學科的合作對于推進我們對宇宙的理解至關重要。

我不是那種會讓我的職業道德下降的人。

Let what comes come. Let what goes go. Find out what remains.