Thus there is no author for the diagram 圖 主 when there is no ego , and all dharmas are conditionally produced . This understanding is at the level of the supreme truth , but at the level of profane truth '?, the author , either Chih － yen or Ûisang , created the diagram seal 印 out of a vow to make readers return to the source of truth and stop grasping after name and superficiality .