He identified four significant motives: to ultimately benefit the self (egoism), to ultimately benefit the other person (altruism), to benefit a group (collectivism), or to uphold a moral principle (principlism).
hiː aɪdˈɛntᵻfˌaɪd fˈoːɹ sɪɡnˈɪfɪkənt mˈoʊɾɪvz: tʊ ˈʌltᵻmətli bˈɛnɪfˌɪt ðə sˈɛlf ˈiːɡoʊˌɪzəm, tʊ ˈʌltᵻmətli bˈɛnɪfˌɪt ðɪ ˈʌðɚ pˈɜːsən ˈɔːltɹuːˌɪzəm, tə bˈɛnɪfˌɪt ɐ ɡɹˈuːp kəlˈɛktɪvˌɪzəm, ɔːɹ tʊ ʌphˈoʊld ɐ mˈɔːɹəl pɹˈɪnsɪpəl pɹˈɪnsɪpəlˌɪzəm.