In the field of theoretical inquiry, Coleridge was the first to introduce psychology and philosophy into literary criticism. He was interested in the study of the process of poetic creation, the very principles of creative activity, and for his purposes freely drew upon philosophy and psychology.

He thus brought about a union of philosophy, and literary criticism. His literary theories have their bases in philosophy. He philosophized literary criticism, and thus brought about a better and truer under standing of the process of creation and the nature and function of poetry.