The Lexicon for Ethics, Integrity and Aptitude has been the closest in interpreting the syllabic content for GS Paper IV. Having established itself as the leader in its domain; the present edition is an upgraded version. It provides with the â€˜objectiveâ€™ keys to solve the Case Study Questions. Apart from this, it has all the literal and application meaning for all the words that are subtly related but explicitly different. In a book what you get is a complete read for excelling in your GS Paper IV for the Mains. It could also be useful for general reading for anyone interested in knowing about all that is good for human existence.