  In Damian’s view, the past cannot be undone because what God has made cannot lose its status of having been (because God has made what he wanted to make, and his will is immutable in eternity). For the same reason, the principle of non-contradiction is universally valid for everything which has being from God. Also, the things that have being from God cannot but be when they are, and therefore the consequence of necessity and impossibility is valid for them (609A).