The main personal interest of Dr. J. Bronowski, the distinguished scientist, broadcaster, and man of letters, was the relation between the arts and science. In this book he attempts to translate the new culture of science into terms which any intelligent person can understand, and thus to dispel the common prejudice brought on by difficulties in perceiving the ideas of science behind the technical jargon in which they are expressed. Bronowski's method is to approach the reader across the real and important interests which he already possesses: history, literature, and the everyday affairs of his life. This is not a book about any particular science: it is a book about the essential nature of science and how it appears in the lives of each of us.