The soul stands aloof as a mirror in which every activity of the mind and body is reflected. The soul accomplishes its purpose through these vehicles, the purpose that it has set before itself from the beginning of its manifestation. As great as is the purpose, so great is the strength that the soul applies to its fulfillment; and as fine as is the purpose, so fine does the intelligence become for its accomplishment. This is very well said by Sa'adi: "Every soul is born for a certain purpose, and the light of that purpose has been kindled in this soul."