For me, Roger Keyes is talking about a great mystery of existence, that all is one giant activity, each is all, each belongs to the whole. Each of us is a child and ancient means to me that each of us is a new configuration (a child) of all that has ever been (ancient). I am of and from all that was. I became aware that everything lives inside me in contemplating statements like Rumi's that I am the ocean within the drop, in learning that all creation is made of the same atoms and elements that over time become part of everyone and everything, and in learning that everything is my perception which is inside me. I let life take me by the hand when I let go of trying to control where I go and how I should be and trust life.