We study how the brain makes up the mind, and how that goes awry in states of unusual perception and belief - from delusions and hallucinations in serious mental illnesses, to mystical, and religious experiences, and conspiracy theories, in the general population. We are committed to finding consilient explanations of human cognition which span these levels of analysis. With such a deep understanding we will be better placed to intervene more precisely, mitigate suffering and promote human flourishing.