Abstract
Malebranche's ideas about the imagination have inspired philosophers over the centuries. Drawing on the writings of Aristotle, Bacon, Descartes and many other sources, Malebranche created his own innovative theory. It is especially his work on the force of the imagination, however, that was to be of lasting influence. In this introductory article, we briefly discuss Malebranche's theory of the imagination and point out its role in mathematics, contagion of ideas, monstrous births, errors of the mind and rhetoric.