<P>The author is widely regarded as one of the greatest philosophers of the twentieth century and a brilliant writer and commentator on social and political affairs. <EM>What I Believe</EM> offers a lucid and concise insight into the author''s thinking on issues that preoccupied him throughout his life: atheism, religious morality and the impact of science on society. With the addition of two further essays, ''Why I Took to Philosophy'' and ''How I Write'', this is a superb example of the author as his very best.</P><P> </P>