Alister E. McGrath offers a major reappraisal of what it means to be 'rational' which will have significant impact on older discussions of this theme. He sets out to explore the consequences of the seemingly inexorable move away from the notion of a single universal rationality towards a plurality of cultural and domain-specific methodologies and rationalities. What does this mean for the natural sciences? For the philosophy of science? For Christian theology? And for the interdisciplinary field of science and religion? How can a single individual hold together scientific and religious ideas, when these arise from quite different rational approaches? This ground-breaking volume sets out to engage these questions and will provoke intense discussion and debate.