Emile Zola (1840-1902) is the foremost representative of the Naturalist school, and is best remembered for Therese Raquin and his twenty-novel cycle, The Rougon-Macquarts.

Walt Whitman (1819-1892) was a celebrated American poet, chiefly known for his controversial and highly original poetry collection Leaves of Grass. Born in 1819 on Long Island, he worked as a journalist, teacher, government clerk, and volunteer nurse during the Civil War.

Whitman published his seminal work in 1855 with his own money, soon becoming one of the world's most popular and influential poets. After suffering a stroke in 1873 he retired to Camden, New Jersey, where he died nineteen years later - just two months after the final edition of Leaves of Grass appeared on sale.

We know very little about the author of The Odyssey and its companion tale, The Iliad. Most scholars agree that Homer was Greek; those who try to identify his origin on the basis of dialect forms in the poems tend to choose as his homeland either Smyrna, now the Turkish city known as Izmir, or Chios, an island in the eastern Aegean Sea. According to legend, Homer was blind, though scholarly evidence can neither confirm nor contradict the point.

The ongoing debate about who Homer was, when he lived, and even if he wrote The Odyssey and The Iliad is known as the "Homeric question." Classicists do agree that these tales of the fall of the city of Troy (Ilium) in the Trojan War (The Iliad) and the aftermath of that ten-year battle (The Odyssey) coincide with the ending of the Mycenaean period around 1200 BCE (a date that corresponds with the end of the Bronze Age throughout the Eastern Mediterranean). The Mycenaeans were a society of warriors and traders; beginning around 1600 BCE, they became a major power in the Mediterranean. Brilliant potters and architects, they also developed a system of writing known as Linear B, based on a syllabary, writing in which each symbol stands for a syllable.

Scholars disagree on when Homer lived or when he might have written The Odyssey. Some have placed Homer in the late-Mycenaean period, which means he would have written about the Trojan War as recent history. Close study of the texts, however, reveals aspects of political, material, religious, and military life of the Bronze Age and of the so-called Dark Age, as the period of domination by the less-advanced Dorian invaders who usurped the Mycenaeans is known. But how, other scholars argue, could Homer have created works of such magnitude in the Dark Age, when there was no system of writing? Herodotus, the ancient Greek historian, placed Homer sometime around the ninth century BCE, at the beginning of the Archaic period, in which the Greeks adopted a system of writing from the Phoenicians and widely colonized the Mediterranean. And modern scholarship shows that the most recent details in the poems are datable to the period between 750 and 700 BCE.

No one, however, disputes the fact that The Odyssey (and The Iliad as well) arose from oral tradition. Stock phrases, types of episodes, and repeated phrases such as "early, rose-fingered dawn" bear the mark of epic storytelling. Scholars agree, too, that this tale of the Greek hero Odysseus's journey and adventures as he returned home from Troy to Ithaca is a work of the greatest historical significance and, indeed, one of the foundations of Western literature.

O. Henry (1862-1910) had a short but colourful life. Born William Porter in Greensboro, North Carolina, he initially worked as a pharmacist before moving into journalism. In 1896 he was arrested for embezzling funds while working as a bookkeeper for a bank.

In a moment of madness, he absconded on his way to the courthouse before his trial and fled to Honduras for six months. He returned to face trial after learning that his wife was dying of tuberculosis and served three years in jail. While in prison, he adopted the pen name O. Henry, and after his release he found great fame and popularity as a short story writer.

A veteran of the American Civil War who fought at Shiloh and Chickamauga in the Union ranks, Bierce became one of America's best-known writers and journalists, admired for his insolent, entertaining and sometimes courageous columns.

In 1913 he set off for Mexico, then in the throes of revolution, and was never seen again. Ralph Steadman is the author of many illustrated books including Sigmund Freud, I Leonardo, The Big I Am, The Scar-Strangled Banner, Alice and Animal Farm. His most recent publication is the novel, Doodaaa.

Guy de Maupassant was born in Normandy in 1850. In addition to his six novels, which include Bel-Ami (1885) and Pierre et Jean (1888), he wrote hundreds of short stories, the most famous of which is 'Boule de suif'.

By the late 1870s, he began to develop the first signs of syphilis, and in 1891 he was committed to an asylum in Paris, having tried to commit suicide. He died there two years later.

Emily Dickinson (1830 - 1886) lived in almost complete isolation from the outside world, but maintained many correspondences and read widely.

Upon her death, Dickinson's family discovered 40 handbound volumes of her poems, which she had assembled herself.

Edith Nesbit was an English author and poet who was born in 1858.

As well as writing for children, she wrote poems, plays and was also a political activist and co-founded the Fabian Society.

Her most famous works are The Railway Children and Five Children and It.

Henry James was born in New York in 1843 and was educated in Europe and America. He left Harvard Law School in 1863, after a year's attendance, to concentrate on writing, and from 1869 he began to make prolonged visits to Europe, eventually settling in England in 1876.

His literary output was prodigious and of the highest quality: more than ten outstanding novels, including The Portrait of a Lady and The American; countless novellas and short stories; as well as innumerable essays, letters, and other pieces of critical prose. Known by contemporary fellow novelists as 'the Master', James died in Kensington, London, in 1916.

Edith Wharton (1862-1937) was a brilliant, clever American writer known for such works as The House of Mirth and Ethan Frome. She became the first woman to win a Pulitzer when she was awarded the 1921 Prize for her novel The Age of Innocence.

A member of the New York elite, Wharton funnelled her experiences into vivid portrayals and critiques of high society, while deftly exposing the painful tension between personal desires and societal norms. Wharton died in Paris in 1937 at the age of 75, having written 85 short stories, 16 novels, 11 works of nonfiction, and 3 books of poetry.