The Lankavatara Sutra is a key Mahayana Buddhist text that emphasizes the concept of consciousness and the nature of reality, serving as a foundational scripture for Zen Buddhism. It explores the ideas of non-duality, the nature of the mind, and the process of awakening, influencing both the philosophical and meditative practices in Zen traditions in Japan and Korea. Its teachings encourage practitioners to realize their inherent Buddha nature through direct experience rather than through intellectual understanding.