Sir John Hicks (1904-89) was a leading economic theorist of the twentieth century, and along with Kenneth Arrow was awarded the Nobel Prize in 1972. His work addressed central topics in economic theory, such as value, money, capital and growth. An important unifying theme was the attention for economic rationality 'in time' and his acknowledgement that apparent rigidities and frictions might exert a positive role as a buffer against excessive fluctuations...