When I look at the world I'm pessimistic, but when I look at people I am optimistic.
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.
成功的关键是专注于目标，而不是障碍。
重要的不是你看到了什么，而是你看到了什么。