He absolutely rejects the Trinity, of which he seems to have entertained the idea that it could not be interpreted otherwise than as presenting three distinct Gods.
His first and ruling idea was simply religious reform--to overthrow Arabian idolatry, and put an end to the wild sectarianism of Christianity.

That he proposed to set up a new religion was a calumny invented against him in Constantinople, where he was looked upon with detestation, like that with which in after ages Luther was regarded in Rome.
But, though he rejected with indignation whatever might seem to disparage the doctrine of the unity of God, he was not able to emancipate himself from anthropomorphic conceptions.

The God of the Koran is altogether human, both corporeally and mentally, if such expressions may with propriety be used.

Very soon, however, the followers of Mohammed divested themselves of these base ideas and rose to nobler ones.
The view here presented of the primitive character of Mohammedanism has long been adopted by many competent authorities.

Sir William Jones, following Locke, regards the main point in the divergence of Mohammedanism from Christianity to consist "in denying vehemently the character of our Savior as the Son, and his equality as God with the Father, of whose unity and attributes the Mohammedans entertain and express the most awful ideas." This opinion has been largely entertained in Italy.