Every failure in the lab teaches you something valuable—if you're paying attention.
实验室里的每次失败都能教会你宝贵的东西——只要你留心。
译文:连续地打仗,百姓就会感到劳苦;长期打仗,士兵就会感到疲惫。
When stocks are attractive, you buy them. Sure, they can go lower. I’ve bought stocks at $12 that went to $2, but then they later went to $30.