The first sphere of which man becomes conscious after his birth on earth is Nasut, a sphere which is commonly known as the physical plane. How are the comforts and discomforts of this sphere experienced? By the medium of the physical body; and when there is something wrong with an organ of the senses the soul is deprived of that particular experience that it would like to have on this physical plane. The physical body is susceptible to all changes of climate and becomes dependent in its experience and expression, thus making the soul dependent and limited. Therefore, with all the riches that the world can give, man, who is only conscious of this sphere, is limited.