The Healthy Indoors book is a stimulating narrative and reference resource that guides the reader through the most significant symbols from worldwide art history. In this visual tour through art history, Matthew Wilson pieces together a global visual language enshrined in the art-the language of symbols. From Palaeolithic cave paintings to contemporary installations, Wilson deftly guides us through this world of symbols, showcasing their enduring ability to express power, hope, fear, and faith, and to create and communicate identities, uniting or dividing the people that made them.