Hua Yan philosophy understands what is commonly called the self as empty of any fixed, independent essence and as arising only through interdependent relationships with all phenomena. Rather than positing a solid core or enduring substance, it treats the self as a contingent configuration of causes and conditions—body, feelings, thoughts, and habits—that has no intrinsic nature of its own. This emptiness does not mean nonexistence, but indicates that the self cannot be isolated from the wider field of existence that sustains it. The boundaries that ordinarily seem to separate self from others are thus regarded as conventional and functional, not ultimate.

From this perspective, the self is best seen as a dynamic node within an infinite web of interdependence. Each being is likened to a jewel in a vast net, reflecting and being reflected by all other jewels, so that nothing stands alone or apart. The doctrine that “the one is all, the all is one” expresses this mutual inclusion: each individual both contains and is contained by the totality of existence. To understand oneself fully, therefore, is to recognize this mutual interpenetration, where principle and phenomena, self and world, do not obstruct one another.

Such a vision of selfhood carries profound implications for spiritual realization and ethical life. True self-understanding is not a retreat into an isolated interiority, but an awakening to one’s non-separation from the cosmic whole, often expressed as identity with the universal Buddha-nature that pervades all things. When the self is seen as an expression of this interconnected totality, harming others is understood as harming oneself, and benefiting others as benefiting oneself. From this realization, compassion arises naturally and spontaneously, as the rigid distinction between self and other loosens and the relational nature of all beings comes to the fore.