"I chose to address this letter to you, Madame, because I did not know other than by telling you how much I admired and loved him. I didn't know how to pay him a real tribute. I think he would have liked to know that I wrote this letter while listening to a piece by Olafur Arnalds entitled "Tree"... "L'arbre". He would have listened to it. Even better. We would have listened to it together, without excluding all those who loved him. His family, it seemed natural to me to write to you this evening. To you, whom I immediately thought of that morning. Because a mother's love is stronger than anything. I believe it. Stronger than life. Stronger than art itself. And certainly stronger than death."