"Heroes are at peace. The 6th William Penn Lecture, May 9, 1920" is an important literary work presented by the famous author John Haynes Holmes. In this book, he offers readers to look at the concept of heroism in a completely different dimension - as one that can be manifested not only in combat situations, but also in peace-building work. The author singles out the special qualities and deeds of those who devoted their lives to the peaceful resolution of conflicts and protection of the common good. This book is not only a source of knowledge about history, but also a spiritual inspiration for those who dream of a better world.