  William's influence on Abelard here is obvious. Primarily, William and perhaps others from the school of Anselm of Laon were responsible for the delineating the complex moral psychology that is at the core of Abelard's ethics. The major differences are with regard to reason and responsibility. Because of our fallen state, William has little regard for the ability of human reason to correctly discern what is good. William is also content to prove that evil is no thing by situating its source somehow in the human mind. He is not interested in showing that we are responsible, only that we, and not God, are accountable. Our will, like our mind and body, is defective and we suffer the consequences of its failures. It is Abelard who takes this moral psychology and develops from it a theory of moral responsibility.