deaf and blind thing like you cannot in any way interfere with us. For we have such an exact, subtle and faultless order(3) that if the one who has authority over us was not

(3) The All-Wise Maker has created the human body as though it was a well arranged city. A number of the blood vessels perform the duties of telephones and telegraphs, while others of them are like pipes from a fountain through which blood, which is the water of life, flows. As for blood, created within it are two sorts of corpuscles. One of them, known as red corpuscles, distributes nutrients to the cells of the body; it conveys sustenance to the cells according to a Divine law. (Like merchants and food officials.) The other sort are white corpuscles, which are fewer in number than the former. Their duty, like soldiers, is defence against enemies, such as illness. Whenever they undertake that defence, with their two revolutions like Mevlevi dervishes, they take on a swift and wonderful state. As for blood as a whole, it has two general duties; the first is to repair damage done to the body’s cells and the second is to collect any waste matter from the cells and to clean the body. There are two sorts of blood-vessels, veins and arteries. One of these carry purified blood, they are the channels through which clean blood is conveyed. The others are the channels for the turbid blood which collects the waste matter; these convey the blood to where breathing occurs; that is, the lungs.

The All Wise Maker created in the air two elements, nitrogen and exygen. As for exygen, when it comes into contact with the blood in breathing, it draws to itself, like amber, the impure element, carbon, which is polluting the blood. The two combine and are transformed into matter called carbonic acid gas. Oxygen also maintains the body temperature, and purifies the blood. This is because, in the