 His plays "Enough Stupidity in Every Wise Man" (1868) and "The Storm" (1859) draw on the life that he knew best, that of the middle class.Other important Russian playwrights of the 19th century include Alexander Sukhovo-Kobylin and Mikhail Saltikov-Shchedrin.Naturalism, a theatrical movement born out of Charles Darwin's "The Origin of Species" (1859) and contemporary political and economic conditions, found its main proponent in Émile Zola.