Silent Portraits is a collection of quotes and portraits from a diverse range of protagonists. Alongside the silent yet vibrant black-and-white photographs, the protagonists provide personal descriptions of their approaches and experiences with inner work. Insights into the effects of mental exercise, drawn from conversations with renowned author and neuroscientist Dr. Ulrich Ott from the Giessen Bender Institute of Neuroimaging (BION), round out the book.