The whole article shows that Spencer mentioned a wide range of sciences, including at least physics, chemistry, biology, physical geography (Spencer criticized social geography in his article), physiology, psychology and so on.
Spencer's educational thought once dominated American universities for 30 years, and influenced Russian, China, Japanese and other Asian countries, and its ideological influence also declined. However, its praise is also extremely rich. For example, Dewey called Spencer a monument, and Eliot, the president of Harvard University, called him a true pioneer of education. On Education is the most widely read British educational work besides Locke's Random Talk on Education. Spencer's achievements are beyond doubt. However, the application of social Darwinism in the field of education makes education have the characteristics of individualism and utilitarianism, and its judgment on the value of knowledge is different from that of readers, which is why the author criticizes "what knowledge is the most valuable" in this paper. Education should not be biased against knowledge, but should fully prove the right and wrong of knowledge, and prove and correct it, instead of pricing it like in the market, because knowledge is priceless.