A prolific writer, bestselling novelist, and world-renowned philosopher, **Ayn Rand** defined a full system of thought–from epistemology to aesthetics. Her writing is so extensive and the range of issues she covers so enormous that those interested in finding her discussions of a given topic may have to search through many sources to locate the relevant passage. **The Ayn Rand Lexicon** brings together all the key ideas of her philosophy of Objectivism. Begun under Rand’s supervision, this unique volume is an invaluable guide to her philosophy or reason, self-interest and laissez-faire capitalism–the philosophy so brilliantly dramatized in her novels The Fountainhead, We the Living, and Anthem.