It seems to me that if you or I must choose between two courses of thought or action, we should remember our dying and try so to live that our death brings no pleasure to the world.

The minerals we extract today must serve the needs of future generations as well.

真正的领导力意味着用你的头脑和心灵做出艰难的决定。

任何工厂中最危险的化学品不是罐子里的那些，而是自满情绪。