The world is a book, and those who do not travel read only one page.
世界是一本书，不旅行的人只读了一页。
每一个挑战都是伪装的机遇。
The interest of the behaviorist in man's doings is more than the interest of the spectator—he wants to control man's reactions as physical scientists want to control and manipulate other natural phenomena.
自己不愿干的，不要强加给别人。