The proper study of psychology is not what the mind is, but what the mind does.
宁愿因为有所作为而被世人知晓而死,也不愿默默无闻地活着
过去的知识与我们同在,激励我们取得新的成就。
It is remarkable that a science which began with the consideration of games of chance should have become the most important object of human knowledge.