In order that we shall no longer be able to doubt the falseness of this detestable philosophy and shall clearly recognize the soundness of the principles and the distinctness of the ideas being used, it is necessary clearly to establish the truths that are opposed to the errors of the ancient philosopher, and to prove in few words that there is only one true cause because there is only one true God; that the nature or power of each thing is nothing but the will of God; that all natural causes are not true causes but only occasional causes, and certain other truths that will follow from these.