In Buddhist thinking, Kuan-yin is characterized by compassion, Manjusri by wisdom, Samantabhadra by moral action, and Ksitigharbha by moral resolve. These four concepts of compassion, wisdom, moral action and moral resolve embrace the entire spirit of Buddhism.
佛教觀念中，觀音主「悲」、文殊主「智」、普賢主「行」、地藏主「願」，這悲、智、行、願四字，涵括了整個佛教精神。