The cycle of life

The tree says to the leaf: 
"That’s the cycle of life. You may think you’re going to die, but you live on in me. It’s thanks to you that I’m alive, because I can breathe. It’s also thanks to you that I have felt loved, because I was able to give shade to the weary traveller. Your sap is in my sap; we are one thing.”
(Paulo Coelho, “Manuscript Found in Accra”)