Jesper Hoffmeyer is on to something significant. Whereas semiotics is often a dull analysis of formal symbols, Hoffmeyer's biosemiotics is a lively natural history of signs that interprets evolution as a continuous advance in semiotic freedom. All living things, according to Hoffmeyer, are constantly reacting to their environment by interpreting the signs in their own unwelt,, or interior representation of the surrounding world. Freedom and chaotic self-organization thus become the hallmarks of all life. Based on sound research and written in a delightfully accessible style, Signs of Meaning in the Universe should be interpreted as an advance in both philosophy and science.