Final answer:
The paradox identified in Carson McCullers' excerpt centers on the contrast between self-awareness and the need for social connection. While self-consciousness is essential for identity formation, it simultaneously leads to an imperative need for belonging to alleviate the distress of isolation.
Step-by-step explanation:
The paradox that people struggle with in life according to the excerpt from "Loneliness . . . an American Malady" by Carson McCullers revolves around the duality of self-consciousness and the need for social connection. On one hand, the awareness of self differentiates humans from animals and is a fundamental aspect of identity development. On the other hand, this newfound identity leads to an imperative need to belong to something greater than the individual's own self. There lies an inherent tension between the need to affirm one's own identity and the contrasting drive to merge with others, avoiding the distress of moral isolation.
According to psychological and sociological scholars like Sigmund Freud, Erikson, and Mead, the sense of self is intricately developed through various stages and is hugely reliant on social interaction. The very foundation of morality and social behavior, as posited by Charles Darwin, can be traced back to social instincts that have evolved over time. Thus, individuals undergo a multitude of psycho-social challenges throughout life's stages where they must balance personal identity formation with social integration.