A Book Concerning Long Life is a work by the renowned Swiss physician, Paracelsus (also known as Theophrastus). The book is a treatise on the topic of longevity, exploring various methods and techniques for achieving a long and healthy life. Paracelsus draws on his extensive knowledge of medicine, alchemy, and natural philosophy to provide readers with practical advice on diet, exercise, and lifestyle choices. He also delves into more esoteric subjects,...