This book is a remarkable tribute to the memory of Pat de Mare. It contains a selection of his work that represents his different understanding of groups, both large and small, that has not only had a significant impact on the practice of group in his life time, but also a potential for revolutionizing current thinking both now and in the future.

The collection is organized into four sections on the small, median and large groups. Each section is introduced by some of de Mare's closest friends and colleagues. These introductions are not only invaluable preparation for reading the...