"Baseball players or cricketers do not need to be able to solve explicitly the non-linear differential equations which govern the flight of the ball. They just catch it."

“The temptation to use mathematics is irresistible for economists. It appears to convey the appropriate air of scientific authority and precision to economists' musings.”

“In most Western economies, the general relationship is not in fact between the rate of inflation and the level of unemployment, but between the rate of change of inflation and the rate of change of unemployment.”

“The obstacles facing academic economists are formidable, for tenure and professional advancement still depend to a large extent on a willingness to comply with and to work within the tenets of orthodox theory.”

“Once the true relationship between inflation and unemployment is understood, with luck and skill, a free lunch is possible.”

“The importance to Smith of the overall set of values in which the economy operates is generally ignored by his followers in the late twentieth century. His economics, based upon individual self-interest, is remembered, but his moral framework is not.”

“The model of competitive equilibrium which has been discussed so far is set in a timeless environment. People and companies all operate in a world in which there is no future and hence no uncertainty.”