His verse divides itself into several classes. We have the single lyrics, written somewhat in the style of the later seventeenth century. Of these The Humble Bee is the most exquisite, and although its tone and imagery can be traced to various well-known and dainty bits of poetry, it is by no means an imitation, but a masterpiece of fine taste. The Rhodora and Terminus and perhaps a few others belong to that class of poetry which, like Abou Ben Adhem, is poetry because it is the perfection of statement. The Boston Hymn, the Concord Ode, and the other occasional pieces fall in another class, and do not seem to be important. The first two lines of the Ode, "O tenderly the haughty day Fills his blue urn with fire." are for their extraordinary beauty worthy of some mythical Greek, some Simonides, some Sappho, but the rest of the lines are commonplace. Throughout his poems there are good bits, happy and golden lines, snatches of grace. He himself knew the quality of his poetry, and wrote of it, "All were sifted through and through, Five lines lasted sound and true." He is never merely conventional, and his poetry, like his prose, is homespun and sound. But his ear was defective: his rhymes are crude, and his verse is often lame and unmusical, a fault which can be countervailed by nothing but force, and force he lacks. To say that his ear was defective is hardly strong enough. Passages are not uncommon which hurt the reader and unfit him to proceed; as, for example:-- "Thorough a thousand voices Spoke the universal dame: 'Who telleth one of my meanings Is master of all I am.'" He himself has very well described the impression his verse is apt to make on a new reader when he says,-- "Poetry must not freeze, but flow." The lovers of Emerson's poems freely acknowledge all these defects, but find in them another element, very subtle and rare, very refined and elusive, if not altogether unique. This is the mystical element or strain which qualifies many of his poems, and to which some of them are wholly devoted. There has been so much discussion as to Emerson's relation to the mystics that it is well here to turn aside for a moment and consider the matter by itself. The elusiveness of "mysticism" arises out of the fact that it is not a creed, but a state of mind. It is formulated into no dogmas, but, in so far as it is communicable, it is conveyed, or sought to be conveyed, by symbols. These symbols to a sceptical or an unsympathetic person will say nothing, but the presumption among those who are inclined towards the cult is that if these symbols convey anything at all, that thing is mysticism. The mystics are right. The familiar phrases, terms, and symbols of mysticism are not meaningless, and a glance at them shows that they do tend to express and evoke a somewhat definite psychic condition.