Africa may yet prove to be the spiritual conservatory of the world...When the civilised nations in consequence of their wonderful material development, shall have had their spiritual susceptibilities blunted through the agency of a captivating and absorbing materialism, it may be that they have to resort to Africa to recover some of the simple elements of faith.

Christianity, Islam and the Negro Race (ed. Black Classic Press, 1888) - ISBN: 9780933121416