Although scholars have long recognized that classical Stoicism affected Walt Whitman’s work, a full account of the extent of this debt has yet to be produced. Although he drew inspiration from many sources, we argue that Whitman’s “spinal ideas”—the ontological, moral, metaphysical and political threads of order in his thinking—are most consistently Stoic in origin. We do so by examining Whitman’s poetry, prose, correspondence, manuscripts, notebooks, and autobiography in the context of the primary and secondary Stoic material with which he (...) was familiar. We demonstrate that a number of ideas at the heart of Whitman’s literary vision—his pantheism, materialism, cosmopolitanism, reconciliation of evil and death, and conceptions of both providence and virtue—were strongly indebted to Stoic thought. As background to this argument, we first explore the transmission of Stoicism to America and its reception among American readers. We also show how and why Whitman came under the influence of Stoic teachings. (shrink)