当现有约束被改变，允许企业家从事新的生产活动形式时，经济增长就会发生。

It is only shallow peoplewho require years to get rid of an emotion. A man who is master of himself, can end a sorrow as easily as he can invent a pleasure.

In seeking the unattainable, simplicity only gets in the way.

译文：如果志向不坚毅，思想境界不开阔，沉溺于世俗私情，碌碌无为，永远混杂在平庸的人群之后，就会难免沦落到下流社会，成为没有教养，没有出息的人。