Matter is one of most familiar yet obscure concepts in the modern western account of the world: it is widely taken to explain the very nature of existence, and it has become a pillar of the secular-scientific worldview. Nevertheless the history of 'matter' reveals a complicated genealogy of classical concepts concerning atoms, energy, and substance, combined with theological debates about the mysterious status of the reality that surrounds us. Through three short papers and an open discussion, this seminar will explore the concepts and controversies that surround the notion of matter. Spanning western and Indian cultures, and touching on the disenchantment of the world, the disjunction of secular and sacred reality, we will seek to reconsider the pivotal position of materiality in our understanding of the world.