If the fathomless Tao is the source of all, what created the Tao and what created that creator, and on and on?
You could philosophise about that endlessly.
Lets’s say infinity/eternity is just there to enjoy it, so let’s get out on the balcony under the night sky and have a beer or a coffee or a splif or a ciggi or a glas of water, and let the all-and-all guide and let the spirit flow trough you, and enjoy the night.