This is a classic Sufi manual on the 'science of the heart'. For Sufis, the 'heart' is the seat of the soul and holds the key to the intimate relationship that exists between soul and body. Each heart, according to this traditional wisdom, possesses four qualities: predatory, animal, demonic and divine. The latter represents our true origin and potential, and by use of the intelligence and spiritual practices enabled by God's grace, we may restore equilibrium to our inner core.