In 1934, Marshall McLuhan enrolled as a student at Cambridge University, a school which pioneered modern literary criticism. During his studies at Cambridge, he became acquainted with one of his professors, I.A. Richards, a distinguished English professor, who would inspire McLuhan's later scholarly works. McLuhan admired Richards' approach to the critical view that English studies are themselves nothing but a study of the process of communication. Richards believed that "words won't stay put and almost all verbal constructions are highly ambiguous". This element of Richards' perspective on communication influenced the way in which McLuhan expressed many of his ideas using metaphors and phrases such as "The Global Village" and "The Medium Is the Message", two of his most well-known phrases that encapsulate the theory of media ecology.