Book excerpt: The Lotus Sutra is one of the most revered of Mahayana sutras (sacred texts), sometimes called 'the king of sutras'. Opening The Heart Of The Cosmos is based on teaching given by Thich Nhat Hanh in which he highlights elements of the sutra as keys to compassion, love, and understanding. He explains how the possibility of everyone becoming a Buddha provides the basis from which we can take bodhisattva action, unselfish devotion to all beings.