Lewis is known for his literary debates with Edward Said, the Palestinian American literary theorist whose aim was to deconstruct what he called Orientalist scholarship. Said, who was a professor at Columbia University, characterized Lewis' work as a prime Example of Orientalism in his 1978 book Orientalism and in his later book Covering Islam. Said asserted that the field of Orientalism was political intellectualism bent on self-affirmation rather than objective study, a form of racism, and a tool of imperialist domination. He further questioned the scientific neutrality of some leading Middle East scholars, including Lewis, on the Arab World. In an interview with Al-Ahram weekly, Said suggested that Lewis' knowledge of the Middle East was so biased that it could not be taken seriously and claimed "Bernard Lewis hasn't set foot in the Middle East, in the Arab world, for at least 40 years. He knows something about Turkey, I'm told, but he knows nothing about the Arab world." Said considered that Lewis treats Islam as a monolithic entity without the nuance of its plurality, internal dynamics, and historical complexities, and accused him of "demagogy and downright ignorance." In Covering Islam, Said argued that "Lewis simply cannot deal with the diversity of Muslim, much less human life, because it is closed to him as something foreign, radically different, and other," and he criticised Lewis' "inability to grant that the Islamic peoples are entitled to their own cultural, political, and historical practices, free from Lewis' calculated attempt to show that because they are not Western... they can't be good."