The most dangerous phrase in business is 'We've always done it this way.'

The most dangerous creation of any society is the man who has nothing to lose.

古代学者在内心涵养上下功夫，所以表现在外表上便是德高望重的标志；今天的学者在外表上下功夫，对于内心涵养，则显出实际德行的缺陷。