Sarah Jones Nelson is a philosopher of science and politics. She is a consultant and adviser to the Vatican on questions of physics, mathematics, philosophy and theology at the Pontifical Lateran University International Research Area on Foundations of the Sciences. At Princeton University, in the Department of Philosophy, she taught across disciplines in philosophy of law, aesthetics and morality. At the University Center for the Study of Religion, she directed the Princeton Project on Fragility, an interdisciplinary faculty seminar which convened also at the Institute for Advanced Study under the auspices of the Schools of Mathematics and Social Science. As an honorary member of Christ Church, Oxford University, she discovered and researched a Newton manuscript at Magdalen College concerning his invention with Locke of axiomatic rights. She is publishing a book in progress on the fragility of truth.*