By challenging our assumptions about the act of self-sacrifice as it relates to religious teachings, the authors have shown altruism to be more of a secular than religious notion. At the same time, their findings highlight how charitable acts operate with the values and structures of the religions studied.

Exploring a range of philosophical and religious thought from Greco-Roman "philia" to Judaism, Christianity, and Islam, from Hinduism in India to Buddhism and the religions of China and Japan, the authors find that altruism becomes problematic when applied to religious studies because it is, in fact, a concept absent from religion. Chapters on Judaism, Christianity, and Islam reveal that followers of these religions cannot genuinely perform self-sacrificing acts because God has promised to reward every good deed. Moreover, the separation between the self and the other that self-sacrifice necessarily implies, runs counter to Buddhist thought, which makes no such distinction.
By challenging our assumptions about the act of self-sacrifice as it relates to religious teachings, the authors show altruism to be more of a secular than religious notion. At the same time, their findings highlight how charitable acts operate with the values and structures of the religions studied.