Imam Ja‘far al-Ṣadiq (as): It is through intellect that people come to know their Creator and that they are created, that He is the One Who regulates their affairs, that they are the ones who are being maintained, that He is Eternal and they are mortals. It is through intellect that they reason based on what they have seen of His creation, like the heavens, the earth, the sun, the moon, the night and the day, and [come to the realization] that they and all other beings have a Creator who never ceases to exist and will always be. al-Kāfī