Arnold defends the position of criticism and puts forward several significant views in this essay. Critical activity is significant. Critical power may be lower than creative ability, but the finest criticism accomplishes a valued function.
Creation is not possible always; but criticism is. Arnold opines that poetry (or creative writing) is created out of materials and elements --- the raw material of experience or "Ideas." Discovering novel ideas is the business of a philosopher. The grand work of a literary production is one of amalgamation and elucidation, not of analysis and discovery. The man must join forces with the epoch or the moment. Thus great creative epochs in literature are rare, for all ages are not ages of great and inspired ideas. The "Theory of the moment" has its drawbacks. We have no means of discovering what ideas or events are "great", and, after all, it is the poet's interpretation which matters.
The critical power controls the ideas in all branches of knowledge such as religion, philosophy, science, history etc. The critic, consequently, creates an intellectual situation, which can be profitably used by the creative writer. When the critical reviewer brings these ideas within the reach of society, he is able to produce a kind of stir and growth everywhere in the social and intellectual atmosphere. It is out of this stir that creative epochs of literature begin to evolve. To create a flow of ideas is the main function of criticism.
Criticism is the exercise of curiosity. Inquisitiveness in its good sense is undeniably necessary in a critic. It is the business of criticism to know the best that is known and thought in the world. It is not a vulgar desire to pry into others' personal life and private affairs. Its business is to fashion a current of fresh ideas with uncompromising honesty and due ability. But its business is to do no more; it should leave alone questions of practical consequences and applications.
Arnold says that criticism should not have clandestine political or personal motives behind it. Detached appraisal fostered by literary criticism is of high expediency in society. Aiming at an ideal of perfection true criticism must not endorsed encourage such works as fall short of the perfect standard of excellence. An intimate and lively consciousness of the truth of what is said must always be retained.
Judgement is a subsidiary function of criticism for Arnold. It is knowledge which a critic must seek, for judgement has to be supported by fresh knowledge. The most satisfactory part of a critic's work is search for new knowledge which makes criticism "sincere, simple, flexible, ardent, and ever-widening its knowledge."
The significance of Arnold's views is obvious. He, for the first time in the history of English literature, speaks for the importance and value of criticism. He shows consistency in arguing out his theory. Poetry as well as criticism are concerned with ideas and in the pre-occupation with ideas lays the joy both of the creative and critical activities.
Arnold's advocacy of the necessity of the English literary critics trying to benefit by the democratic intelligence of the French Nation and the regimented vigour of the Germans is something worthwhile.
Unquestionably, in an altered environment, if the Aristocracy had not ceased to be an important limit of the social structure or if the common people, the mass of populace, had begun to count, Arnold might have expressed himself differently.
Overall, this Essay is a landmark in the History of Literary Criticism in English and the thoughts expressed here, are relevant for the people of all other languages and literatures.