My feelings about Das Kapital are the same as my feelings about the Koran. I know that it is historically important and I know that many people, not … - John Maynard Keynes

The master-economist must possess a rare combination of gifts .... He must be mathematician, historian, statesman, philosopher — in some degree. He must understand symbols and speak in words. He must contemplate the particular, in terms of the general, and touch abstract and concrete in the same flight of thought. He must study the present in the light of the past for the purposes of the future. No part of man's nature or his institutions must be 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 to earth as a politician.

Jevons saw the kettle boil and cried out with the delighted voice of a child; Marshall too had seen the kettle boil and sat down silently to build an engine.

It is a grand book worthy of one’s hopes of you. A most powerful piece of well organized analysis with high aesthetic qualities, though written more perhaps than you see yourself for the cognoscenti in the temple and not for those at the gate. Anyhow I prefer it for intellectual enjoyment to any recent attempts in this vein.