The aim of this paper is to examine how rhetorical expressions formed from experience are shown on poems and a novel, expecially “Tract,” “Queen-Ann’s-Lace,” and “Flowers by the Sea” of William Carlos Williams and The Old Man and the Sea of Ernest Hemingway. Williams, who has a long career as a physician as well as a poet, tries to ingeniously invent a totally fresh American form of poetry whose subject matters are focused on common circumstances of everyday life and the lives of ordinary people. Hemingway seeks his style basically shaped in reaction to experience of World War I. This is called the “hard-boiled style” that is economical and understated, with which his literary philosophy has affected existentialism. The two writers show various common points by reacting against the elaborate style of 19th-century writers and creating writings which have a meaning built through simplicity and vitality which can help not only pursue the essential meaning of life, but have also a significant impact on modernist literature representing the 20th century.