In his "scientific romances," H. G. Wells was less concerned with scientific principles than with the need to show how human arrogance tends to unleash ferociously destructive forces. In The Time Machine (1895), for example, the pleasure-loving Eloi are preyed on by the brutish Morlocks-an outcome Wells thought likely if capitalism continued unchecked. The need for mankind's humility is most pointed in The War of the Worlds (1898), where nothing human is able to stop the Martian takeover of Earth. In 1938 Orson Welles adapted The War of the Worlds as a radio script and interrupted a New York broadcast to announce, earnestly and believably, that Martians had landed in New Jersey. Mass hysteria erupted. Both it and The Time Machine have been turned into successful movies.