Thou comest not when violets lean/O'er wandering brooks and springs unseen," "
This man wrote "A Discourse on the Life and Genius of James Fenimore Cooper." His poems include one written upon the death of his wife, "October, 1866,"  and a poem that includes the lines "Thou comest not when violets lean/O'er wandering brooks and springs unseen," "To the Fringed Gentian." He is best-known, however, for a poem that asks "Far, through their rosy depths, dost thou pursue/Thy solitary way?" and a meditation on death written at the age of seventeen. For 10 points, name this author of "To a Waterfowl" and "Thanatopsis."
This man wrote "A Discourse on the Life and Genius of James Fenimore Cooper."
William Cullen {Bryant}