Frans de Waal was an inspiration of my philosophical research. I have spent many years reading his books and articles. When you pass a lot of time learning from somebody, you can feel as you know that person as a friend. That’s I feel about Frans de Waal. I wrote some emails few months ago and he answered in a kindle manner. I think that his death is a significant lost for humans and no-humans. Thanks Frans de Waal for taught us about empathy, friendship and humanity.