Existence is a risk, but non-existence is also a risk.
成功不是终点，失败也非末日，最重要的是继续前进的勇气。
Don't let anyone tell you that you can't do something.
Psychology as the behaviorist views it is a purely objective experimental branch of natural science.
In this business, if you're good, you're right six times out of ten. You're never going to be right nine times out of ten.