Of the things which it has collected on its way to manifestation on the earth it has made that accommodation which is called the mind. The body in which the soul functions on the physical plane also contributes to the soul the properties of all the worlds to which it has belonged: the mineral, the vegetable, and the animal kingdoms. It is for this reason that man is called a universe in himself; for man consists in himself of all that is in heaven and all that is on earth. The Qur'an tells how God made man His representative on earth, His chief in whose care the universe was given.