"Disillusionment of Ten O'Clock" is a poem from Wallace Stevens's first book of poetry, Harmonium. First published in 1915, it is in the public domain.
The poem allows the reader to linger over the possibility of colors, strangeness and unusual dreams. Imagination that is absent from a mundane orderly life is represented not by a dandified aesthete but instead by a drunken sailor dreaming of catching tigers in red weather.
The poem's message is fairly simple. Stevens believed that poetry and literature in general had the ability to excite and inspire. He believed that the imagination was an overlooked tool with the innate capability of distinguishing a mundane life (i.e. the lives of those who wore 'white night gowns' to bed) from an exciting and fulfilling one. Essentially, he believed that the only limit on a person's life was a weak imagination.
The poem itself shows that imagination has its own order, so the representation should be kept distinct from its subject. This follows one of the main facets necessary for modernist literature to function: that the object or idea being represented exists in and for itself. On this reading, the poem is not an indictment of middle-class values, though that is one interpretive option, but rather the "haunted house" of white night-gowns represents life without imagination.