Anselm's Definition of God Anselm's definition of "God" starts by saying that God is the greatest being we can possibly think of. When Anselm states this, it essentially means that it is not possible to think of a being greater than God. Anselm also states that if God is the greatest thinkable being, he is referring to the fact that it would be impossible to imagine or to create in ones mind someone or something being better than God. Therefore, it would be impossible to say that God only exists in ones mind because it is much greater to exist in reality than it is to exist only in ones mind. Anselm t