Final answer:
Charles Cooley did not provide a rhymed couplet in the provided references, but his concept of the 'looking-glass self' describes how individuals shape their self-concept based on how they perceive others perceive them.
Step-by-step explanation:
Charles Horton Cooley summarized his concept of the looking-glass self, which describes how individuals form their sense of self through the perceptions of others. Unfortunately, the exact rhymed couplet by Cooley is not provided in the provided references, and thus cannot be quoted here directly. However, Cooley’s idea is that we see ourselves reflected in how we imagine others perceive us after any given interaction. Our reactions to their perceived views, in turn, shape our self-concept. This concept is a fundamental sociological theory suggesting that one's self-identity is influenced by social interaction and the reflections of others.