So, for example, he claims that children should be taught to draw because it would be useful to them on their foreign travels (for recording the sites they visit), but poetry and music, he says, are a waste of time.
例如，他认为，儿童应该学习绘画，因为这对他们的出国旅行有帮助（记录下他们所访问的地方），但是他认为，诗歌和音乐是浪费时间。