Edgar Rice Burroughs (1875-1950) had various jobs before getting his first fiction published at the age of 37. He established himself with wildly imaginative, swashbuckling romances about Tarzan of the Apes, John Carter of Mars and other heroes, all at large in exotic environments of perpetual adventure. Tarzan was particularly successful, appearing in silent film as early as 1918 and making the author famous. Burroughs wrote science fiction, westerns and historical adventure, all charged with his propulsive prose and often startling inventiveness. Although he claimed he sought only to provide entertainment, his work has been credited as inspirational by many authors and scientists.