God in the Age of Science? A Critique of Religious Reason is a 2012 book by the Dutch philosopher Herman Philipse, written in English and published in the United Kingdom. Philipse found his Atheist Manifesto (1995) to be too hastily and superficially written, and decided to set up a more complete work to systematically refute all the arguments for the existence of God and adherence to any form of theism. To gain insight in how a religious person substantiates the existence of God, Philipse presents a "religious decision tree" that leads to four categories of theists. He starts by asking: