Marshall's crime is to pretend to handle imperfect competition with tools only applicable to perfect competition.
Paul SamuelsonI spent the four years I was an undergraduate working on the beach. And it wasn't because I was lazy; it was because my freshman class would go to a hundred different employers and wouldn't get a nibble.
Paul SamuelsonKelsoism is not accepted by modern scientific economics as a valid and fruitful analysis of the distribution of income but rather it is regarded as an amateurish and cranky fad.
Paul SamuelsonYou know what happiness is: 'Having a little more money than your colleagues.' And that's not so tough in academic life.
Paul Samuelson