Advertising: the science of arresting the human intelligence long enough to get money from it.

Nature never appeals to intelligence until habit and instinct are useless. There is no intelligence where there is no need of change.

Chess is as elaborate a waste of human intelligence as you can find outside an advertising agency.

I don't think science is hard to teach because humans aren't ready for it, or because it arose only through a fluke, or because, by and large, we don't have the brainpower to grapple with it. Instead, the enormous zest for science that I see in first-graders and the lesson from the remnant hunter-gatherers both speak eloquently: A proclivity for science is embedded deeply within us, in all times, places, and cultures. It has been the means for our survival. It is our birthright. When, through indifference, inattention, incompetence, or fear of skepticism, we discourage children from science, we are disenfranchising them, taking from them the tools needed to manage their future.

It is impossible to underrate human intelligence - beginning with one's own.

I don't think there's anything unique about human intelligence.