Leadership is the ability to recognize the special abilities and limitations of others, combined with the capacity to fit each one into the job where he will do his best.
In former days, men sold themselves to the Devil to acquire magical powers. Nowadays they acquire those powers from science, and find themselves compelled to become devils. There is no hope for the world unless power can be tamed, and brought into the service, not of this or that group of fanatical tyrants, but of the whole human race, white and yellow and black, fascist and communist and democrat; for science has made it inevitable that all must live or all must die.