A man who has tasted with profound enjoyment the pleasure of agreeable society will eat with a greater appetite than he who rode horseback for two hours. An amusing lecture is as useful for health as the exercise of the body.
Just as the philanthropist is the nuisance of the ethical sphere, so the nuisance of the intellectual sphere is the man who is so occupied in trying to educate others, that he has never had any time to educate himself.
If in the 1930s nuclear weapons had been invented and the Allies had been faced by Nazi SS20s and Backfire Bombers, would it then have been morally right to have handed Hitler control of one of the most terrible weapons man has ever made? Would not that have been the one way to ensure that the thousand year Reich became exactly that? Would not unilateralism have given to Hitler the world domination he sought?