Mark Johnston is the Henry Putnam University Professor of Philosophy at Princeton University. He is the author of many influential and widely reprinted articles in ontology, philosophy of mind, philosophical logic, and ethics, along with Particulars and Persistence (Princeton, Ph.D. 1984), Saving God (Princeton University Press, 2009) and Surviving Death (Princeton University Press, 2010). The last two works aim to salvage religious aspiration from its idolatrous lookalikes. In October 2019 at the University of St. Andrews, he delivered The Hard God, his Gifford Lectures on the ontological basis for the equal moral status of all human beings, the origin of evil, and the hope for a final justice on the far side of death. In November 2019 at UC Berkeley, he delivered The Manifest, his Townsend Lectures on the nature of perception and its distinctive implications for the mind-body problem. In September 2023 at the University of Cambridge, he delivered How Did Evil Come Into the World?, his Stanton Lectures on a novel solution to the old problem of evil.