There is no way you can live an adequate life without making mistakes.
天上永遠(yuǎn)不會(huì)掉下玫瑰來，如果想要更多的玫瑰，必須自己種植。
Quality is free. It's not a gift, but it's free. What costs money are the unquality things -- all the actions that involve not doing jobs right the first time.
The goal of education is not to increase the amount of knowledge but to create the possibilities for a child to invent and discover, to create men who are capable of doing new things.