Professor Harrison, an American linguist, said: "Imagine if, for no reason, the whale is going to be extinct, or the pyramid is going to collapse, and the Amazon forest is being cleared, people will be very angry and try to stop it because those are human The common heritage is visible to the naked eye. Language is more ancient, complex, and delicate human wealth. Each language is a uniquely structured world of thought, reflecting a unique way of human existence. Each language has infinite The possibilities of expression, infinite collocation possibilities, their vocabulary, pronunciation system and grammar, combined with exquisite structures, are greater than any building we build by hand. ". What is the emphasis of the professor's words? ['To protect and rescue those languages that are dying.', 'Language, like the ecological environment, is the common property of mankind.', 'Language is more valuable human wealth than cetaceans, pyramids, and Amazon forests.', 'Language deserves more protection than any building.']