 Some ten of his works on theology, physics, and metaphysics still exist in manuscript; two others, "De Antichristo" and "De modo existendi corporis Christi in sacramento altaris", appeared in print centuries after his death.A treatise, "Contra corruptorem Sancti Thomae", published in 1516 under the name of Aegidius Romanus (Giles of Rome), is commonly attributed to John of Paris; it was certainly not written by Aegidius.All these show vast erudition.