Why does humanity need a common ideal? So that there may be a guiding light leading peoples and individuals toward a shared goal. But which idea is worthy of becoming that ideal? : The author asks why humanity needs a common ideal and answers that it serves as a guiding light, uniting peoples and individuals toward a shared goal. Without such a unifying vision, societies risk fragmentation, aimless drift, and conflicting priorities that hinder collective progress. A common ideal provides direction, inspires cooperation, and gives meaning to long-term efforts. Yet the deeper question remains: which idea is truly worthy of becoming that ideal? It must be noble enough to transcend narrow interests, inclusive enough to embrace diversity, and inspiring enough to motivate generations. The author implies that only an ideal rooted in the flourishing of all humanity one that balances individual dignity with collective well-being can fulfill this role. In a divided world, the search for such a guiding light is not optional but essential. A worthy ideal does not erase differences; it elevates them toward a higher purpose.