Aristotle called three a perfect number. We offer three cheers of praise. Christians envisage God as triune. In this new episode of The Sheldrake-Vernon Dialogues, Rupert Sheldrake and Mark Vernon ask why three is associated with completion, creativity, dynamism and divinity. Their discussion ranges over the patterns of three that are revealed in nature; the relationship between being, consciousness and bliss; the links between a third position and transformation in psychotherapy. The discussion was prompted a Cambridge University conference, New Trinitarian Ontologies, which featured leading theologians such as Rowan Williams and David Bentley Hart. Their talks can be found online - https://www.newtrinitarianontologies.com/