The Key to the Door of Nibbana or the Supreme Happiness

The work is organized around eleven main sections. The first section explains how the Discourse on Loving-Kindness functions as the key to the door of Nibbāna, emphasizing understanding and practice rather than ritual recitation. The second section discusses the first stanza and the cultivation of wholesome qualities such as uprightness, gentleness, obedience, humility, and skill in one’s own welfare. The third section, based on the second stanza, focuses on the development of a consistently happy and peaceful mind. The fourth section presents the advice of the wise as a condition for happiness and moral progress. The fifth section expands compassion toward living beings, encouraging the practitioner to include all forms of life within the field of loving-kindness. The sixth section reflects on the wish that all beings be happy, connecting this aspiration with the calming and purification of the mind. The seventh section addresses cruelty, harassment, and deception as obstacles to wholesome conduct. The eighth section develops a parental or protective attitude toward beings through the image of “all my children.” The ninth section urges the practitioner to extend loving-kindness throughout the whole universe. The tenth section relates loving-kindness to refined states of happiness comparable to the comforts of Brahmas. The final section, “There Is Only One More Death,” frames the culmination of practice as movement toward the end of saṃsāric suffering.