Heart in Molla Sadra's Analysis of Spirit

The present study aims to focus on the place of heart in Molla Sadra’s Analysis of Spirit.
The method of the survey is descriptive- analyses method.
The results of the research indicate that In Molla Sadra’s Analysis of Spirit; there is not an exact, proportionate position for the rank of heart. Since the relation between the spirit and its powers is manifested clearly in this philosophy, the rank of the heart, according to the implied clues, can be considered a medial one equal to that of wisdom. The heart is the symptom of the manifestation of spiritual love.
Thereon, three proposed ranks of soul, wisdom, heart, and sensations are the symbols of the descending process of “Unity to Multiplicity” and the ascending process of “Multiplicity to Unity”. On the other hand, there is a great emphasis on the evolution of spiritual love in humankind, i.e. the evolution of the soul.