Jonathan Irvine Israel FBA (born 26 January 1946) is a British writer on Dutch history, the Age of Enlightenment and European Jews. Israel was appointed as Andrew W. Mellon Professor in the School of Historical Studies at the Institute for Advanced Study, Princeton, New Jersey, in January 2001. He was previously Professor of Dutch History and Institutions at the University of London.
In recent years, Israel has focused his attention on a multi-volume history of the Age of Enlightenment. He contrasts two camps. The "radical Enlightenment" founded on a rationalist materialism first articulated by Spinoza. Standing in opposition was a "moderate Enlightenment" which he sees as profoundly weakened by its belief in God. In Israel’s highly controversial interpretation, the radical Enlightenment is the main source of the modern idea of freedom. He contends that the moderate Enlightenment, including Locke, Voltaire, Montesquieu, and Rousseau, made no real contribution to the campaign against superstition and ignorance.
Israel's career until 2001 unfolded in UK academia. He did his undergraduate studies at Queens' College, Cambridge and his graduate work at University of Oxford and the El Colegio de México, Mexico City, receiving his D.Phil. from Oxford in 1972. He was named Sir James Knott Research Fellow at the University of Newcastle upon Tyne in 1970, and in 1972 he moved to the University of Hull where he was first an assistant lecturer then a lecturer in Early Modern Europe. In 1974 he became a lecturer in Early Modern European History at University College London, progressing to become a reader in Modern History in 1981, then to become Professor of Dutch History and Institutions in 1984. In January 2001, Israel became a professor of modern European history in the School of Historical Studies at the Institute for Advanced Study, Princeton, USA. In 2007, the 375th anniversary of the birth of Spinoza, he held the Spinoza Chair of Philosophy at the University of Amsterdam.