“Archaic humans paid for their large brains in two ways. Firstly, they spent more time in search of food. Secondly, their muscles atrophied. Like a government diverting money from defence to education, humans diverted energy from biceps to neurons.” — Yuval Noah Harari Copy Share Image
Individuals possessing moderate-sized brains easily find their proper sphere, and enjoy in it scope for all their energy. In ordinary circumstances they distinguish themselves, but they sink when difficulties accumulate around them. Persons with large brains, on the other hand,… — George Combe Copy Share Image