Original: His early novels, called "scientific romances", invented a number of themes now classic in science fiction in such works as The Time Machine, The Island of Doctor Moreau, The Invisible Man, The War of the Worlds, When the Sleeper Wakes, and The First Men in the Moon.
Simplified: He wrote many books such as The Invisible Man, The Time Machine, The Island of Dr. Moreau, and The War of the Worlds.