Stylistically, the poem is uncharacteristic of Whitman's poetry because of its rhyming, song-like flow, and simple "ship of state" metaphor. These elements likely contributed to the poem's initial positive reception and popularity, with many celebrating it as one of the greatest American works of poetry. Critical opinion has shifted since the mid-20th century, with some scholars deriding it as conventional and unoriginal. The poem has made several appearances in popular culture; as it never mentions Lincoln, it has been invoked upon the death of several other heads of state. It is famously featured in Dead Poets Society (1989) and is frequently associated with the star of that film, Robin Williams.