How can we test whether moral zeal is truly free of personal interests?

This source-based Hagut Yosef essay explores the question: How can we test whether moral zeal is truly free of personal interests? The canonical Hebrew article develops the theme through Torah sources and reflection on human life. This localized discovery layer preserves the source’s meaning and identity and does not add new halakhic, historical, psychological, medical, legal, political, scientific, or empirical claims beyond the Hebrew source.