The historian Asa Briggs argues that his personality did not endear itself to the British mind, for Pitt was too solitary and too colourless, and too often exuded an attitude of superiority. His greatness came in the war with France. Pitt reacted to become what Lord Minto called "the Atlas of our reeling globe". His integrity and industry and his role as defender of a threatened nation allowed him to inspire and access all national reserves of strength. William Wilberforce said, "For personal purity, disinterestedness and love of this country, I have never known his equal." Historian Charles Petrie concludes that he was one of the greatest Prime Ministers "if on no other ground than that he enabled the country to pass from the old order to the new without any violent upheaval ... He understood the new Britain." For this he is ranked highly amongst all British Prime Ministers in multiple surveys.