Asaṅga is remembered above all for articulating a vision in which consciousness stands at the heart of experience. What appears as an external, independently existing world is understood as a projection or representation within mind, so that the familiar split between subject and object is revealed as a cognitive construction rather than an ultimate fact. This “consciousness-only” analysis does not reduce everything to a private self, but instead examines how experience is constituted by mental processes and karmic conditioning. In this way, Asaṅga’s teaching invites a reorientation: instead of seeking truth in supposedly solid external things, one turns to the dynamic flow of awareness itself.

Within this framework, Asaṅga described a sophisticated model of mind, often summarized as eight consciousnesses. Beyond the five sense consciousnesses and the mental consciousness, he identified a subtle ego-consciousness that clings to a sense of “I,” and a foundational storehouse consciousness (ālaya-vijñāna). This storehouse holds karmic “seeds,” serving as the basis for continuity across moments of experience and even across lifetimes, without positing a permanent self. Spiritual practice is portrayed as a purification and transformation of this basis, a “revolution” in which defiled seeds are exhausted and wisdom becomes the new ground of experience.

To clarify how delusion and awakening unfold, Asaṅga taught the doctrine of the three natures. The imagined nature is the falsely constructed realm in which selves and objects are grasped as inherently real and separate. The dependent nature is the stream of phenomena arising through causes and conditions, especially the conditioned flow of consciousness shaped by karma and ignorance. The perfected nature is the realized suchness of things, free from conceptual fabrication and the subject–object split. Progress on the path consists in seeing the imagined as empty, understanding the dependent correctly, and thereby realizing the perfected.

These insights into mind are inseparable from a rigorous path of practice. Asaṅga emphasized meditation and yogic discipline as the means to investigate consciousness directly, analyze afflictive patterns, and apply appropriate antidotes. His works lay out a systematic account of the bodhisattva path, including the cultivation of the perfections, the four immeasurables, and the stages of spiritual development. Compassion and wisdom are treated as mutually reinforcing: as understanding of consciousness-only and emptiness deepens, altruistic activity is not abandoned but refined, guided by insight into the nondual nature of reality and the absence of any substantial self to defend or promote.