Complex sentence: Sadra discussed Avicenna's arguments for the existence of God, claiming that they were not a priori, and rejected the argument on the basis that existence precedes essence, or that the existence of human beings is more fundamental than their essence.
Split into simpler sentences: Sadra discussed Avicenna's arguments for the existence of God, claiming that they were not a priori. He rejected the argument on the basis that existence precedes essence, or that the existence of human beings is more fundamental than their essence.