Is the Great Depression amenable to real business cycle theory? In the 1970s and 1980s Lucas and Prescott took an abstentionist stance. They maintained that, because of its exceptional character, an explanation of the Great Depression was beyond the grasp of the equilibrium approach to the...

This paper concerns a neglected aspect of Lucas's work: his methodological writings, published and unpublished. Particular attention is paid to his views on the relationship between theory and ideology. I start by setting out Lucas's non-standard conception of theory: to him, a theory and a...

This paper's aim is to offer a reconstruction of the Marshallian conception of equilibrium and time. Its main features are as follows. First, I argue that the hallmark of this conception is to posit an interrelationship between two equilibrium concepts — market-day and normal equilibrium. I...