E. E. Cummings

Edward Estlin Cummings (October 14, 1894 – September 3, 1962), commonly known as e e cummings or E. E. Cummings, was an American poet, painter, essayist, author, and playwright. During World War I, he worked as an ambulance driver and was imprisoned in an internment camp, which provided the basis for his novel The Enormous Room (1922). The following year he published his first collection of poetry, Tulips and Chimneys, which showed his early experiments with grammar and typography. He wrote four plays, the most successful of which were HIM (1927) and Santa Claus: A Morality (1946). He wrote EIMI (1933), a travelog of the Soviet Union, and delivered the Charles Eliot Norton Lectures in poetry, published as i—six nonlectures (1953). Fairy Tales (1965), a collection of short stories, was published posthumously.
Cummings wrote approximately 2,900 poems. He is often regarded as one of the most important American poets of the 20th century. He is associated with modernist free-form poetry, and much of his work uses idiosyncratic syntax and lower-case spellings for poetic expression. M. L. Rosenthal wrote:

The chief effect of Cummings' jugglery with syntax, grammar, and diction was to blow open otherwise trite and bathetic motifs through a dynamic rediscovery of the energies sealed up in conventional usage ... He succeeded masterfully in splitting the atom of the cute commonplace.