Learning is any change in a system that produces a more or less permanent change in its capacity for adapting to its environment.
学习是系统中产生的任何变化，这些变化或多或少会永久性地改变其适应环境的能力。
Every setback is just a setup for a comeback.
You can't please everyone, so don't try.
我对中间状态、事物之间的相互关系感兴趣。
There is no shortcut to success. You have to work hard every single day.