The Varieties of Scientific Experience
 The Varieties of Scientific Experience: A Personal View of the Search for God is a book consisting of a series of lectures by astronomer Carl Sagan which was first published in 2006 which was 10 years after his death. The title is a reference to The Varieties of Religious Experience by William James.Edited by Ann Druyan this book is essentially an edited version of Carl Sagan's 1985 Gifford Lectures The Search for Who We Are with a new introduction by Druyan.