Today, while walking to meet a friend, I found myself, for no conscious reason, silently singing the Gayatri mantra: "Om Bhur Bhuvah Svaha. Tat Savitur Varenyam, Bhargo, Devasya Dhimahi: Dhiyo Yo Nah Prachodayat". The central part invokes all beings, below on and beyond the earth, and the end praises for their being and fulfillment. It comes from the Chandogya Upanishad, 1st millennium BCE. It recalled to me the spiritual richness that we met in India when Isabel and I stayed there for a while.