心理学家必须是一个公正的观察者。

I have always believed that if you want to achieve anything in life, you have to work for it.

我坚持我所信仰的。

Data abstraction is the reduction of a particular body of data to a simplified representation of the whole.

There is no such thing as a special category of science called applied science; there is science and its applications, which are related to one another as the fruit is related to the tree that has borne it.