In his major new book A.C. Grayling examines the different ways to live a good life, as proposed from classical antiquity to the recent present. Grayling focuses on the two very different conceptions of what a good life should be: one is a broadly secular view rooted in attitudes about human nature and the human condition; the other is a broadly transcendental view which locates the source of moral value outside the human realm. In the modern world - the world shaped by the rise of science in the seventeenth century - these two views have come increasingly into conflict, and the constantly accumulating tension between them is one of the greatest problems faced by the twenty-first century. Using his renowned clarity of thought and philosophical rigour, AC Grayling has produced an invaluable guide through mankind's ethical struggle to live decently.