心理学理论的价值是由其实用性衡量的。
The habit of reading is the only enjoyment in which there is no alloy; it lasts when all other pleasures fade.
学习是通过修改符号结构来提高性能的过程。
People lie for all kinds of reasons, but mostly they lie because the truth is too hard.
You have to be willing to put in the time, the effort, and the energy to be great.