What is imagination and can philosophy define it in any meaningful way? This unit will introduce you to some of the possible answers to these questions and will examine why philosophy has sometimes found it difficult to approach imagination. It will then go on to examine the relationship that imagination has to imagery and supposition, charting where these concepts overlap with imagination and where they diverge. This study unit is just one of many that can be found on LearningSpace, part of OpenLearn, a collection of open educational resources from The Open University. Published in ePub 2.0.1 format, some feature such as audio, video and linked PDF are not supported by all ePub readers.