Vol IV only of an 8-vol set, containing Books 3 & 4, on the themes of reason and knowledge as personified in the Prophet Moses.
About the Mathnawi (from Wikipedia)
The Masnavi is an extensive poem written in Persian by Jalal al-Din Muhammad Balkhi also known as Rumi. The Masnavi is one of the most influential works of Sufism, commonly called “the Quran in Persian”. It has been viewed by many commentators as the greatest mystical poem in world literature. The Masnavi is a series of six books of poetry that together amount to around 25,000 verses or 50,000 lines. It is a spiritual text that teaches Sufis how to reach their goal of being truly in love with God.
About Rumi (from Wikipedia):
Rumi (30 September 1207 – 17 December 1273), was a 13th-century Persian poet, faqih, Islamic scholar, theologian, and Sufi mystic originally from Greater Khorasan. Rumi’s influence transcends national borders and ethnic divisions: Iranians, Tajiks, Turks, Greeks, Pashtuns, other Central Asian Muslims, and the Muslims of South Asia have greatly appreciated his spiritual legacy for the past seven centuries. His poems have been widely translated into many of the world’s languages and transposed into various formats. Rumi has been described as the “most popular poet” and the “best selling poet” in the United States.