Carlos Wilcox:
(October 22, 1794 – May 29, 1827).
American poet. Born at Newport, New Hampshire, Wilcox was a Congregationalist minister. He wrote a poem, The Age of Benevolence, which was left unfinished, and which was clearly influenced by the work of William Cowper.

September―the dearest month of all to pensive minds!

The line frames September as the month most loved by “pensive minds” — people with a reflective, introspective nature. Wilcox contrasts it with May: May is lush, blooming, and “buxom” — the favorite of the world, appealing to lively, extraverted spirits. September, by contrast, is soberer, softer, more solitary — a “sweet twilight” of the year slowly winding down. It’s precisely that quiet and sense of fading that makes the month appealing to those inclined toward thought and reflection. It’s a classic piece of early-19th-century nature poetry, using the season as a mirror for a state of mind: the ripening, stillness, and gentle melancholy of early autumn as an image for a musing, reflective temperament.
Origin:
The line comes from Wilcox’s poem “September,” which opens:
> “The sultry summer past, September comes, / Soft twilight of the slow-declining year. / All mildness, soothing loneliness, and peace; / The fading season ere the falling come, / More sober than the buxom, blooming May, / And therefore less the favourite of the world, / But dearest month of all to pensive minds.”
The widely quoted standalone line — “September — dearest month of all to pensive minds” — is really the closing clause of this longer sentence, which has since taken on a life of its own as an isolated quote.
Author:
Carlos Wilcox (1794–1827) was an American poet and Congregationalist minister, born in Newport, New Hampshire. He’s best known for his unfinished poem “The Age of Benevolence”, and his style shows clear influence from the English poet William Cowper — musing, atmospheric, gently melancholic nature verse in the tradition of English Romanticism.