 For Avicenna, similar to many other Muslim philosophers, the ultimate philosophical endeavor was to unveil the mystery of creation in particular; how Divine unity became the multiplicity of the world of existents. To resolve this riddle, Avicenna adopts the Neoplatonic scheme of emanation which has also been used not only by Sufis and Islamic gnostics to explain the spiritual journey of man towards God but also, by almost all philosopher-mystics from Suhrawardī and Mullā Ṣadrā to Sabziwārī and Ṭabāṭabā’ī.