In terms of learning content, Locke went against the tradition since the Middle Ages and emphasized that what gentlemen need is "the knowledge of a businessman" and "the ability to do business". Guided by this idea, Locke proposed a broad Study subjects: reading, calligraphy (writing), drawing, shorthand, foreign languages, composition (writing), theology, geography, arithmetic, astronomy, geometry, history, ethics, law, logic, rhetoric, natural philosophy, etc. However, he does not require students to "drill too deeply" into various subjects. He only requires them to "try it" and "enlighten a way" for them. In the future, if they still have time or are interested in a certain subject or need it, Sometimes, there will be helpful people asking for directions. He affirmed: "No one in the world who has profound knowledge or a great reputation in any science has obtained it under the supervision of teachers."