What were the major disagreements between Erasmus and Luther during the Protestant Reformation?

Although Erasmus inspired many of Luther's ideas, they disagreed on many subjects, such as whether the Catholic Church should have a moral reform or a reform of beliefs. Did Erasmus disagree with Luther's decision to break away from the Catholic Church? It seems like Erasmus may have thought Luther had gone too far by starting the Protestant Reformation, but I am not completely sure. Sources would be really helpful. EDIT: Sorry, I have been busy lately, so it has taken me awhile to find some time to write this. I am actually not sure where I came up with the idea of Erasmus thinking Luther had gone too far. I probably just assumed it, because Erasmus wanted moral reform of the church, meaning he did not want to change the practices and doctrines of the Catholic Church. I must have assumed that because Erasmus did not think the church needed a reform of beliefs, then he probably would have thought Luther had gone too far by trying to reform the church this way. There is no evidence I have to support this, which is why i put that it "seems" like he thought Luther went too far. This is also the reason why I was thinking Erasmus may have disapproved of the protestant reformation, despite the influence he may have had on it. This goes back to the question, did Erasmus disagree with Luther's break away with the church?