I can only surmise what Donald Trump’s motivations may be for saying what he does. I think either he believes that appealing to the fear, anger, and hatred of his base and perhaps other voters who are hesitant to express out loud what he expresses but nonetheless privately agree with him, will be enough for him to become the G.O.P. nominee and win the general election. Or…exactly the reverse: that is, he may believe that by continuing to make such outlandish statements, the mainstream establishment will bar his G.O.P. candidacy and Republican voters will finally decide that he has gone beyond the pale. That way he can run for President as an Independent, and if he loses as such, which he probably will, he can declare that he put up a good fight and the G.O.P. establishment is the one to blame for his loss by throwing him overboard and, as a result, also losing the general election to Hillary Clinton. He himself can tolerate defeat as an Independent better than as a Republican, particularly when becoming an Independent was not his first choice. This is just speculation on my part since I have no way of getting into Trump’s head, and I am not sure I would want to if I could.