The book "The Principle of the Apple Tree" offers an in-depth exploration of what remains of a life when one is no longer present. Published by the initiative "My Legacy Does Good," it brings together eleven prominent figures from various fields such as politics, science, business, and culture. Photographer Bettina Flitner has sensitively portrayed these individuals and captured their thoughts in moving texts. The conversations are not bound to pre-prepared statements but invite readers to actively engage with themes of life, death, experiences, and hopes. Through personal insights, a space is created that encourages reflection and prompts readers to consider their own values and the passing on of knowledge. This book is an invitation to engage with one's own existence and the meaning of life.