Her attention then moves to the physical -- the chemistry, biology, and neurophysiology associated with love in the brain, mind, and body. She discusses the 'evolution of the face, ' the cuddle, both as caress and as chemical, and the customs of marriage. There are astonishments everywhere. Her distinctive touch, aided by her personal adventures and explorations, enriches our understanding of women and horses, men and mermaids, sex and flying, and other equally enticing subjects.