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Emotions like the instinct to protect are often explained via genetics/ biological functions. I'm fascinated by the banyan tree analogy as described in ancient India's Bhagavad-gita. There it describes the tree of material existence as an upside-down banyan tree, a reflection of the real tree, and emotions can reflect something deeper than physical survival.
I carved this 4 by 6 inch piece last night, printed it this morning, and got carried away in photoshop a few minutes ago! Have a great week!