John Bagot Glubb said this quote

“ Perhaps the most dangerous by-product of the Age of Intellect is the unconscious growth of the idea that the human brain can solve the problems of the world. Even on the low level of practical affairs this is patently untrue. Any small human activity, the local bowls club or the ladies’ luncheon club, requires for its survival a measure of self-sacrifice and service on the part of the members. In a wider national sphere, the survival of the nation depends basically on the loyalty and self‑sacrifice of the citizens. The impression that the situation can be saved by mental cleverness, without unselfishness or human self-dedication, can only lead to collapse. ”