Lampert presents the story of love: when, why, and how love became a central experience of humans. Assuming that our world is built of matter, she states that evolution is the change of this matter, according to the supreme criterion of success in offspring reproduction. Love evolved because of its contribution to reproduction. It first appeared in the mothers of mammals, who used the body's proximity as a main adaptation. Human love expands its borders to include the relationships between women and men, friends, and even nonhuman subjects. Lampert describes motherhood as the source of the...