If farming were to be organised like the stock market, a farmer would sell his farm in the morning when it was raining, only to buy it back in the afternoon when the sun came out.

Actual quote: "the Stock Exchange revalues many investments every day and the revaluations give a frequent opportunity to the individual (though not to the community as a whole) to revise his commitments. It is as though a farmer, having tapped his barometer after breakfast, could decide to remove his capital from the farming business between 10 and 11 in the morning and reconsider whether he should return to it later in the week." | The General Theory of Employment, Interest and Money (1935), Ch. 12