This is a book on the dissipative dynamics of ordered fluids, §with a particular focus on liquid crystals. It covers a whole §range of different theories, mainly concerned with nematic liquid §crystals in both their chiral and nonchiral variants. The authors §begin by giving a detailed account of the molecular origins of §orientational order in fluids. They then go on to develop a general §framework in which continuum theories for ordered fluids can be phrased. §Within this unified setting, they cover both well-established classical theories and new ones with aspects that are not yet...