"So much that Donald Trump spouts is so vulgar and so far from the truth and mean-spirited. It is on that question of character especially that he does not measure up. He is unwise. He is plainly unprepared, unqualified and, it often seems, unhinged. How can we possibly put our future in the hands of such a man?" 

David McCullough, two-time Pulitzer Prize winning historian on Donald J. Trump.:
https://www.democracynow.org/2016/7/13/headlines/david_mccullough_on_trump_vulgar_mean_spirited_unhinged