Indeed there can be no more useful help for discovering what poetry belongs to the class of the truly excellent, and can therefore do us most good, than to have always in one's mind lines and expressions of the great masters, and to apply them as a touchstone to other poetry.
Matthew ArnoldGood poetry does undoubtedly tend to form the soul and character; it tends to beget a love of beauty and of truth in alliance together, it suggests, however indirectly, high and noble principles of action, and it inspires the emotion so helpful in making principles operative.
Matthew Arnold