If we evolved a race of Isaac Newtons, that would not be progress. For the price Newton had to pay for being a supreme intellect was that he was incapable of friendship, love, fatherhood, and many other desirable things. As a man he was a failure; as a monster he was superb.
To be well informed, one must read quickly a great number of merely instructive books. To be cultivated, one must read slowly and with a lingering appreciation the comparatively few books that have been written by men who lived, thought, and felt with style.
The greater part of the population is not very intelligent, dreads responsibility, and desires nothing better than to be told what to do. Provided the rulers do not interfere with its material comforts and its cherished beliefs, it is perfectly happy to let itself be ruled.
