The brain's calculations do not require our conscious effort, only our attention and our openness to let the information through. Although the brain absorbs universes of information, little is admitted into normal consciousness.
Roosevelt's humor was broad, his manner friendly. Of wit there was little; of philosophy, none. What did he possess? Intuition, inspiration, love of adventure.
The trouble with this country is that there are too many politicians who believe, with a conviction based on experience, that you can fool all of the people all of the time.