有时最困难的部分不是放手，而是学会重新开始。

There is no better teacher than history in determining the future……There are answers worth billions of dollars in a history book.

"The ultimate test of a machine learning algorithm is its ability to perform well on new, unseen data."

The key to managing complexity is to focus on the interfaces between components, not their implementations.

效率是工程师的第一美德。