A master economist

According to Lord Keynes....A master economist fulfill a set of attributes more extraordinary than those needed for knighthood or even sainthood:

He must be mathematician, historian, statesman, philosopher... he must contemplate the particular in terms of the general, and touch abstract and concrete in the same flight of thought. He muststudy the present in the light of the ast for the purposes of the future. No part of man's nature or his institutions must lie entirely outside his regard. He must be purposeful and disinterested in a simultaneous mood; as aloof and incorruptible as an artist, yet sometimes as near the earth as a politician....