This chapter describes the development of prosocial motives and the social contexts within which these motives emerge and differentiate. Initially, prosocial behavior is based on a blend of motives, namely, participating in social interaction and early forms of feeling for others. During early childhood, concern-based guilt emerges and mere participation transforms into contributing to collaborative activities. During childhood, the normative turn complements these motives by a sense of obligation (living up to), and, during adolescence, aspiring to one’s ideal self can become an important prosocial motive. In this sense, doing good often is an expression of central human motives, namely, belonging to others, feeling for others, contributing to joint endeavors, affirming a sense of responsibility and normative obligation, and striving for our ideal selves.