A good mechanic is not merely a man who files and hammers, but one who can originate and perfect.
Immature love says: 'I love you because I need you.' Mature love says: 'I need you because I love you.'
Coal isn't just a commodity; it's the foundation upon which modern civilization was built.
Profitability and responsibility can go hand in hand.
In order to write about life first you must live it.
永远不要停止提问——进步就从那里开始。
你和你的目标之间唯一的障碍是你不断告诉自己为什么不能实现它的故事。