"The proportion of his poetry that can be so called is small. But a great deal of it is very fine, very noble, and at times very beautiful, and it discloses the distinctly poetic faculty of which rhythmic and figurative is native expression. It is impressionable rather than imaginative in the large sense; it is felicitous in detail rather than in design; and of a general rather than individual, a representative rather than original, inspiration. There is a field of poetry, assuredly not the highest, but ample and admirable—in which these qualities, more or less unsatisfactory in prose, are legitimately and fruitfully exercised. All poetry is in the realm of feeling, and thus less exclusively dependent on the thought that is the sole reliance of prose. Being genuine poetry, Lowell's profits by this advantage. Feeling is fitly, genuinely, its inspiration. Its range and limitations correspond to the character of his susceptibility, as those of his prose do to that of his thought. The fusion of the two in the crucible of the imagination is infrequent with him, because with him it is the fancy rather than the imagination that is luxuriant and highly developed. For the architectonics of poetry he had not the requisite reach and grasp, the comprehensive and constructing vision. Nothing of his has any large design or effective interdependent proportions. In a technical way an exception should be noted in his skilful building of the ode—a form in which he was extremely successful and for which he evidently had a native aptitude ... Lowell's constitutes, on the whole, the most admirable American contribution to the nature poetry of English literature—far beyond that of Bryant, Whittier, or Longfellow, I think, and only occasionally excelled here and there by the magic touch of Emerson."—W. C. Brownell, in Scribner's Magazine, February, 1907.
"Lowell is a poet who seems to represent New England more variously than either of his comrades. We find in his work, as in theirs, her loyalty and moral purpose. She has been at cost for his training, and he in turn has read her heart, honoring her as a mother before the world, and seeing beauty in her common garb and speech.... If Lowell be not first of all an original genius, I know not where to look for one. Judged by his personal bearing, who is brighter, more persuasive, more equal to the occasion than himself,—less open to Doudan's stricture upon writers who hoard and store up their thoughts for the betterment of their printed works? Lowell's treasury can stand the drafts of both speech and composition. Judged by his works, as a poet in the end must be, he is one who might gain by revision and compression. But think, as is his due, upon the high-water marks of his abundant tide, and see how enviable the record of a poet who is our most brilliant and learned critic, and who has given us our best native idyll, our best and most complete work in dialectic verse, and the noblest heroic ode that America has produced—each and all ranking with the first of their kinds in English literature of the modern time."—Edmund Clarence Stedman.
"As a racy humorist and a brilliant wit using verse as an instrument of expression, he has no clear superior, probably no equal, so far at least as American readers are concerned, among writers who have employed the English language. As a satirist he has superiors, but scarcely as an inventor of jeux d'esprit. As a patriotic lyrist he has few equals and very few superiors in what is probably the highest function of such a poet—that of stimulating to a noble height the national instincts of his countrymen.... The rest of his poetry may fairly be said to gain on that of any of his American contemporaries save Poe in more sensuous rhythm, in choicer diction, in a more refined and subtilized imagination, and in a deeper, a more brooding intelligence."—Prof. William P. Trent.
"In originality, in virility, in many-sidedness, Lowell is the first of American poets. He not only possessed, at times in nearly equal measure, many of the qualities most notable in his fellow-poets, rivaling Bryant as a painter of nature, and Holmes in pathos, having a touch too of Emerson's transcendentalism, and rising occasionally to Whittier's moral fervor, but he brought to all this much beside. In one vein he produced such a masterpiece of mingled pathos and nature painting as we find in the tenth Biglow letter of the second series; in another, such a lyric gem as The Fountain; in another, The First Snow-Fall and After the Burial; in another, again, the noble Harvard Commemoration Ode.... He had plainly a most defective ear for rhythm and verbal harmony. Except when he confines himself to simple metres, we rarely find five consecutive lines which do not in some way jar on us. His blank verse and the irregular metres which he, unfortunately, so often employs, have little or no music, and are often quite intolerable. But after all the deductions which the most exacting criticism can make, it still remains that, as a serious poet Lowell stands high. As a painter of nature, he has, when at his best, few superiors, and, in his own country, none. Whatever be their esthetic and technical deficiencies, he has written many poems of sentiment and pathos which can never fail to come home to all to whom such poetry appeals. His hortatory and didactic poetry, as it expresses itself in the Commemoration Ode, is worthy, if not of the music and felicity of Milton and Wordsworth, at least of their tone, when that tone is most exalted. As a humorist he is inimitable. His humor is rooted in a fine sense of the becoming, and in a profounder insight into the character of his countrymen than that of any other American writer."—John Churton Collins.
"He was a brilliant wit and a delightful humorist; a discursive essayist of unfailing charm; the best American critic of his time; a scholar of wide learning, deep also when his interest was most engaged; a powerful writer on great public questions; a patriot passionately pure; but first, last, and always he was a poet, never so happy as when he was looking at the world from the poet's mount of vision and seeking for fit words and musical to tell what he had seen. But his emotion was not sufficiently 'recollected in tranquillity.' Had he been more an artist he would have been a better poet, for then he would have challenged the invasions of his literary memory, his humor, his animal spirits, within limits where they had no right of way. If his humor was his rarest, it was his most dangerous gift; so often did it tempt him to laugh out in some holy place.... Less charming than Longfellow, less homely than Whittier, less artistic than Holmes, less grave than Bryant, less vivid than Emerson, less unique than Poe, his qualities, intellectual, moral and esthetic, in their assemblage and coÖrdination assign him to a place among American men of letters which is only a little lower than that which is Emerson's and his alone."—John White Chadwick.