today as he was before, jumping lightly from one topic to another, engaged on national topics. but only to a degree. when it comes to issues of national life he spread himself widely if not deeply. and what you don't get from him is a sense he's shown the patience or had the interest to dig into the consequence of his positions. or to absorb the trade-offs that come with them. that said, you can spot the ambition, that unique human ingredient that separates those who achieve the american presidency from those who make a try for it. as we americans take this presidency to heart and look to its endurance, this factor of ambition is dangerous to overlook because as it was in the electoral success of donald trump, so would be the success of who comes to challenge him. the man or woman who stands on the stage with trump in 2020 may need one undeniable humana tribute, an ego able to challenge him, not just an intellect or in the national