"What causes moral progress? In this brilliant book, Appiah casts light on the role played by honor. Even though it's sometimes distorted, as with honor killings in Pakistan, this classical concept can be a lode star in guiding us to a better future. It's an amazing and fascinating insight. This is an indispensable book for both moral philosophers and honorable citizens."

- Walter Isaacson, author of Einstein: His Life and Universe,

"Appiah lays out a concept that is not only compelling in its own right but also suggests a connection that may in time help to collate biological and cultural exploration of human morality."

- Edward O. Wilson, author of Sociobiology,

"A deeply insightful exposition of the dangers, the potential and the (perhaps) ineradicable role of the human sense of honor."

- Charles Taylor, Professor Emeritus of Philosophy, McGill University,