To Have or To Be? is one of the seminal books of the second half of the 20th century. Nothing less than a manifesto for a new social and psychological revolution to save our threatened planet, this book is a summary of the penetrating thought of Erich Fromm. His thesis is that two mode of existence struggle for the spirit of humankind: the having mode, which concentrates on material possessions, power, and aggression, and is the basis of the universal evils of greed, envy, and violence; and the being mode, which is based on love, the pleasure of sharing, and in productive activity. To Have or to Be? is a brilliant program for socioeconomic change.

Born in Frankfurt-am-Main, Erich Fromm(1900-1980) studied sociology and psychoanalysis. In 1933, he emigrated as a member of the Frankfurt School of social thinkers to the United States, moved to Mexico in 1950, and spent his twilight years between 1974 and 1980 in Switzerland. His books Escape from Freedom (1941) and The Art of Loving (1956) made him famous. Other well-known books are Marx's Concept of Man, Beyond the Chains of Illusion, and The Essential Fromm.