Beyond the Ordinary
The supreme person/principle
Krishna describes himself as the Purushottama - the Supreme Being beyond both the changing and unchanging. Using the powerful metaphor of an upside-down tree, Chapter 15 teaches that true fulfillment comes from discovering what lies beyond the perishable world we know.
The Upside-Down Tree
Chapter 15 begins with one of the Gita's most striking images: an enormous tree growing upside-down, with its roots in the sky and its branches spreading downward into the world.
This is the Ashvattha - the sacred fig tree - and it represents the world as we experience it. Its roots are "above" in the eternal, transcendent reality. Its branches spread "below" into the manifest world of names, forms, careers, relationships, achievements, and losses.
Why upside-down? Because our ordinary way of seeing is inverted. We think the world of things is the fundamental reality and wonder if something "higher" exists. Krishna says it's the other way around: the eternal is the root; the changing world is secondary.
The Two Purushas
Krishna then introduces a profound teaching. There are, he says, two kinds of beings in the universe:
Kshara - the perishable. This includes everything that changes: bodies, minds, empires, mountains, stars. Everything that comes into existence will one day cease. Even the longest-lived phenomena are ultimately temporary.
Akshara - the imperishable. This is the unchanging principle that underlies all change. While forms come and go, something eternal remains. The wave is temporary; the ocean is permanent.
Most spiritual teachings stop here: there's the changing world (ignore it) and the changeless absolute (seek it). But Krishna goes further.
The Purushottama
Beyond both the perishable and the imperishable, Krishna says, there is a third reality: the Purushottama - the "Supreme Person" or "Ultimate Principle."
This is where Chapter 15 gets philosophically bold. It's not enough to distinguish temporary from eternal. The Purushottama encompasses both while transcending both. It is the source of both the changing world and the changeless ground.
Think of it this way: the ocean (changeless) gives rise to waves (changing), but what is the ocean itself? Where did it come from? The Purushottama is that ultimate source - not just the unchanging backdrop but the very power of existence itself.