理论和实践的区别在于,理论上,理论和实践没有区别,但在实践中,却有区别。
解析:意在言外,得意忘言。
The concept of progress must be grounded in the idea of catastrophe.
Don't be afraid of failure, be afraid that you don't even dare to try.
不要被你不知道或没做的事情定义。