"Selinger's book is clearly an excellent, well-written introduction to the phenomenology and concepts of soft matter physics. I enjoyed reading it and can but recommend it to students of theoretical physics with an interest in pursuing this research direction, or to those that would need a good background to the contemporary research literature ... . recommended this book to my graduate students with the path to theoretical soft matter physics in mind, as the first that they should read." (Rudolf Podgornik, Liquid Crystals Today, Vol. 26 (2), April, 2017) "Introduction to the Theory of Soft Matter: From Ideal Gases to Liquid Crystals, presents students with many of the key methods and principles of condensed-matter theory that have been valuable for understanding and engineering soft matter, with a particular focus on the theory of liquid crystals. ... It will be a valuable asset for students and junior researchers who are in a growing interdisciplinary field and are looking for an approachable yet rigorous introduction to many of its cornerstone principles." (Greg Grason, Physics Today, scitation.aip.com, November, 2016)