One of the advantages of being old is that you can speak your mind without worrying about the consequences.

The real problem is not whether machines think but whether men do.

The healthy development of financial markets requires joint efforts from all parties.

艺术是自由的女儿。

梦想更多，行动更多，成就更多。

出处:1892年纽约芝加哥的电话线路开通。电话发明人贝尔第一个试音时的声音，这一历史性声音被记录下来。

"Randomized experiments are the gold standard for causal inference, but they are not always feasible."