The influence of epicurean thought on the Rubaiyat of Omar Khayyam. Craig A. Leisy.
Manchester, Shires Press, 2015. xv, 265 pages ; 22 cm. ISBN: 978-1-60571-277-2.

Summary:
The freethinker philosophy of Omar Khayyam, as expressed in his verses, was out of step with his society in the medieval Islamic world. However, his thinking was consistent with that of other freethinkers in the Middle East and may be traced to materialists in ancient Greece such as Democritus (atomism), and Epicurus (341-271 BCE). This book explores evidence that the Persian poet Omar Khayyam, and other poets in the medieval Islamic world, were influenced by the freethinkers in ancient Greece, the source of the conflict between science and religion