Give the pupils something to do, not something to learn; and the doing is of such a nature as to demand thinking; learning naturally results.

过去是一个跟随我们的影子，总是存在，总是影响。

I don't think that when people grow up, they will become more broad-minded and can accept everything.Conversely, I think it's a selecting process, knowing what's the most important and what's the least. And then be a simple man.

The writer’s life is a life of humiliation.

机器学习中的挑战不仅仅是发现数据中的模式，而是发现能够推广到新的、未见过的数据的模式。