new verse forms. An earlier 1963 study by the poet James Radcliffe Squires spoke to the distinction of Frost as a poet whose verse soars more for the difficulty and skill by which he attains his final visions, than for the philosophical purity of the visions themselves. "He has written at a time when the choice for the poet seemed to lie among the forms of despair: Science, solipsism, or the religion of the past century ... Frost has refused all of these and in the refusal has long seemed less dramatically committed than others ... But no, he must be seen as dramatically uncommitted to the single solution ... Insofar as Frost allows to both fact and intuition a bright kingdom, he speaks for many of us. Insofar as he speaks through an amalgam of senses and sure experience so that his poetry seems a nostalgic memory with overtones touching some conceivable future, he speaks better than most of us. That is to say, as a poet must." The classicist Helen H. Bacon has proposed that Frost's deep knowledge of Greek and Roman classics influenced much of his work. Frost's education at Lawrence High School, Dartmouth, and Harvard "was based mainly on the classics". As examples, she links imagery and action in Frost's early poems "Birches" (1915) and "Wild Grapes" (1920) with Euripides' Bacchae. She cites certain motifs, including that of the tree bent down to earth, as evidence of his "very attentive reading of Bacchae, almost certainly in Greek". In a later poem, "One More Brevity" (1953), Bacon compares the poetic techniques used by Frost to those of Virgil in the Aeneid. She notes that "this sampling of the ways Frost drew on the literature and concepts of the Greek and Roman world at every stage of his life indicates how imbued with it he was". Themes In Contemporary Literary Criticism, the editors state that "Frost's best work explores fundamental questions of existence, depicting with chilling starkness the loneliness of the individual in an indifferent universe." The critic T. K. Whipple focused on this bleakness in Frost's work, stating that "in much of his work, particularly in North of Boston, his harshest book, he emphasizes the dark background of life in rural New England, with its degeneration often sinking into total madness." In sharp contrast, the founding publisher and editor of Poetry, Harriet Monroe, emphasized the folksy New