Few figures of the medieval Islamic world loom as large as Nizam al-Mulk (1018–1092), the celebrated Persian vizier of the Seljuk Empire. His name, literally meaning “Order of the Realm,” became synonymous with sound governance, intellectual patronage and a devotion to books that earned him a place among history’s true bibliophiles.

Born in Tus, a city in northeastern Persia (modern-day Iran), Abu Ali Hasan ibn Ali ibn Ishaq, later known as Nizam al-Mulk, was raised in a milieu that valued both scholarship and statecraft. His father was a functionary in the provincial bureaucracy and the young Hasan absorbed both the intricacies of administration and the allure of Persian literary culture.
He studied under some of the leading scholars of Nishapur, one of the intellectual capitals of the time. By the mid-11th century, he had attached himself to the Seljuk court, rising steadily until he became vizier under Alp Arslan in 1064 and continued under his successor, Malik Shah.
Patron of Knowledge
Nizam al-Mulk’s fame rests not only on his political genius but also on his unwavering commitment to knowledge. He was an avid reader and book collector, assembling libraries that mirrored the cosmopolitan tastes of his age.
Chroniclers report that he carried books even on military campaigns, a habit that set him apart from other rulers and statesmen of the time.
The most visible expression of his love for scholarship was the network of madrasas he founded across the empire, known collectively as the Nizamiyya. The most famous was in Baghdad, inaugurated in 1067.
These institutions became models for later Islamic colleges and even influenced European universities in their structure. Among its most notable teachers was Abu Hamid al-Ghazali, one of the most influential theologians in Islamic intellectual history.
The Siyasatnama: A Vizier’s Testament
Perhaps Nizam al-Mulk’s most enduring contribution to intellectual history is his book, the Siyasatnama (Book of Government). This treatise blends political philosophy with practical advice for rulers. In it, he drew upon Persian, Islamic and even Indian traditions to articulate principles of governance.
Some of his aphorisms highlight his literary clarity:
- “The king should be like the sun: he gives light to all, but he burns those who come too close.”
- “Injustice ruins the world and justice sustains it.”
- “A ruler must never cease consulting men of wisdom, for one man’s knowledge is limited.”
Nizam al-Mulk supported Sunni orthodoxy through patronage of scholars and institutions, a policy that made him enemies—most notably the Nizari Ismailis. In 1092, he was assassinated, allegedly by a member of the sect known as the Assassins. His death destabilized the Seljuk Empire, showing how central he had been to its cohesion.

Legacy of a Bibliophile
To remember Nizam al-Mulk solely as a politician would be to miss the essence of his character. His enduring passion for books was inseparable from his public role. By collecting manuscripts, sponsoring scholars, and institutionalizing education, he ensured that learning remained at the heart of governance.
The libraries he endowed and the institutions he established spread knowledge across Persia, Iraq and beyond. His Siyasatnama remains a window into the mind of an 11th-century bibliophile who saw wisdom as the cornerstone of political order. In his synthesis of Persian tradition and Islamic ideals, Nizam al-Mulk shaped not only his own empire but also the intellectual trajectory of the wider Islamic world.
In the end, the Persian bibliophile’s life is proof of a simple truth he himself articulated: “Knowledge is the light of the world and the ruler its guardian.”
Bibliography
Encyclopaedia Iranica, “Nezām al-Molk.”
Oxford Islamic Studies Online, entry on “Nizam al-Mulk and the Nizamiyya Madrasas.”
Stanford Encyclopedia of Philosophy, “al-Ghazali,” sections on education and the Nizamiyya
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