Richard G. Petty, MD

Three Kinds of Brains


“There are three different kinds of brains, the one understands things unassisted, the other understands things when shown by others, and the third understands neither alone nor with the explanations of others. The first kind is most excellent, the second kind also excellent, but the third useless.”        

–Niccoló Machiavelli (Italian Writer and Philosopher, 1469-1527)   

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