Hear the words of prudence, give heed unto her counsels, and store them in thine heart; her maxims are universal, and all the virtues lean upon her; she is the guide and the mistress of human life. ↗
It's perfectly obvious that there is some genetic factor that distinguishes humans from other animals and that it is language-specific. The theory of that genetic component, whatever it turns out to be, is what is called universal grammar. ↗
Poetry being the sign of that which all men desire, even though the desire be unconscious, intensity of life or completeness of experience, the universality of its appeal is a matter of course. ↗