James Martineau

Throughout the past, there has been a lack of intimacy, affection, and regard for Islam by Christianity. This, to a large extent, has been due to a lack of knowledge of the great human and spiritual ideals for which Islam and the teachings of Islam stand.

I can well imagine that certain writers, even writers that we'd consider today very great writers, may not necessarily have tested highly on IQ just because of their numerical skills, or maybe they may not be very good at memory, and are not particularly good at these kinds of tests.