Joseph (Joe) is a retired professor of CS who still likes to keep busy. Other than writing books, he likes to cook, take pictures, and do Tai Chi. Agile software brings together two of his main interests: Patterns and Agility. He believes agility extends beyond software, however.
In addition to teaching, Joe also does agile training and coaching. He is more interested in agile organizations than just agile software development, however. Agile isn't what you DO. Agile is what you ARE.
See Joe's web site
Availability information for the book can be found at either site.