The most called-upon prerequisite of a friend is an accessible ear.

Angelou frames friendship less as advice-giving or problem-solving than as the steady availability to listen. An “accessible ear” suggests presence, patience, and emotional openness—being reachable when another person needs to speak, vent, confess, or simply be heard. By calling it the “most called-upon prerequisite,” she implies that in real life the demand placed on friends is often not grand sacrifice but repeated, ordinary attentiveness. The line also hints at a moral discipline: listening without rushing to judgment or centering oneself. In this view, friendship is sustained by receptivity—making space for another’s experience as a form of care.