What is meant by Justice, and what does it mean to be Just? This definitive and authoritative introductions in the English language to the metaphysical foundations of the writings of 'Ali ibn Abi Talib, the first Shi'a Imam seeks to answer this and other questions. Through the wisdom of his teachings, their profound metaphysical insights and practical guidance, 'Ali ibn Abi Talib is regarded as a paragon of wisdom, piety and virtue, and is not only a great Muslim but a great religious leader whose universal message of truth is relevant for all time.