81. The question of the provision of sustenance also is not so simple as a person may feel it to be from a cursory study of this brief sentence. There exist on this earth millions of animal and vegetable species, each comprising billions of members having different food requirements. The Creator has arranged the means of sustenance for each species in such abundance and so within easy reach that members of no species ever go without food. Then the agencies of the earth and sky which combine and work together in this system are varied and countless. Unless there is the right kind of coordination and harmony between the heat, light, air, water and the diverse substances of the earth, not a single particle of food can be produced. Can anyone conceive that this wise system could come about just accidentally without the intelligent planning and design of an All-Wise Creator? And can anybody in his senses imagine that in this system there could be any hand of a jinn or an angel or the spirit of a pious man?