muhammad-ali used to call himself the greatest of all time, now, president trump is calling lim the greatest at all times. i think nobody knows more about campaign finance than i do. nobody knows more about trade than i do. nobody knows more about construction than i do. reporter: what field doesn t he excel in? i know more about isis than the generals do. nobody knows more about impact statements than i do. nobody understands the horror of nuclear better than me. reporter: it s enough to make your head explode. nobody knows the politics better than i do, believe me. reporter: even political opponents, cory booker, i know more about corey than he knows about himself. nobody builds walls better than i do, believe me. president trump knows how to spew superlatives. i think i have the best temperament. nobody has better toys than i do. reporter: from a guy who doesn t like to read, this. nobody loves the bible more than i do. reporter: thou shalt not