While in the 1940s Khomeini accepted the idea of a limited monarchy under the Iranian Constitution of 1906–07 – as evidenced by his book Kashf al-Asrar – by the 1970s he had rejected the idea. In early 1970, Khomeini gave a series of lectures in Najaf on Islamic government, later published as a book titled variously Islamic Government or Islamic Government: Governance of the Jurist (Hokumat-e Islami: Velayat-e faqih).