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

在愛情中我們都是傻瓜。

數學不是關于數字、方程、計算或算法：它是關于理解的。

Science is not just about discovery, it's about solving real-world problems.

做大事和做小事的難易程度是一樣的。所以要選擇一個值得追求的宏偉目標，讓回報與你的努力相匹配。

"A story is a letter that the author writes to himself, to tell himself things that he would be unable to discover otherwise."

Economic history teaches us that change is possible, but it is rarely easy.

沉默可以是最有力的交流形式。