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

數學家的工作永無止境；總有新的問題要問，新的謎題要解。

The biggest risk is not taking any risk at all.

When you don’t know how much to pay someone for a particular task， ask them “what would be fair” and their answer usually is.

把你的手放在滾熱的爐子上一分鐘，感覺起來像一小時。坐在一個漂亮姑娘身邊整整一小時，感覺起來像一分鐘。這就是相對論。

真相是一件美麗而可怕的事情，因此應該非常謹慎地對待。

Sustainability is not just a goal, it's a responsibility we owe to the future.

在我的一生中，大自然的新景象讓我像孩子一樣歡欣鼓舞。

Honesty is the first chapter in the book of wisdom.

A good composition is like a good conversation - every element has its place and purpose.