Abou Hamid Mohammed ben Mohammed al Ghazzali was an arabian philosopher of the 11th century. Here’s an enlightening passage from his notes on knowledge of God.

Passage

An important part of our knowledge of God arises from the study and contemplation of our own bodies, which reveal to us the power, wisdom, and love of the Creator. His power, in that from a mere drop He has built up the wonderful frame of man; His wisdom is revealed in its intricacies and the mutual adaptability of its parts; and His love is shown by His not only supplying such organs as are absolutely necessary for existence, as the liver, the heart, and the brain, but those which are not absolutely necessary, as the hand, the foot, the tongue, and the eye. To these He has added, as ornaments, the blackness of the hair, the redness of lips, and the curve of the eyebrows.

Man has been truly termed a “microcosm,” or little world in himself, and the structure of his body should be studied not only by those who wish to become doctors, but by those who wish to attain to a more intimate knowledge of God, just as close study of the niceties and shades of language in a great poem reveals to us more and more of the genius of its author.

Al Ghazali translated by Henry A. Homes. The Alchemy of Happiness. Albany, N.Y.: J:Munsell, State Street, 1873.