"The difference between correlation and causation is fundamental in empirical work."

最有效的经济共同体建立在共同的伦理视野之上，包括社区成员彼此之间所承担的一系列道德义务。

You have to fight for your dreams, no one is going to hand them to you.

Success is not final, failure is not fatal: It is the courage to continue that counts.

The secret of all effective advertising is not the creation of new and tricky words and pictures, but one of putting familiar words and pictures into new relationships.