Brahma Sutra 137 — etena yogaḥ pratyuktaḥ (2-1-3)138 — na vilakṣaṇatvāt asya tathātvam ca śabdāt (2-1-4)139 — abhimānivyapadeśas tu viśeṣanugativyām (2-1-5) 140 — dṛśyate tu (2-1-6)

“The Argument Based on the Difference Between the Nature of the World and the Nature of Brahman.”

This entire section revolves around one central philosophical challenge:

“How can an impure, inert, ever-changing world arise from pure, conscious, changeless Brahman?”

Opponents (Sāṅkhyas, logicians, dualists) raise a powerful objection against Advaita here.

1️⃣ The Objection of VILAKṢAṆATVA — ‘Difference of Nature’

According to the critics:

Brahman = Pure, Conscious, Formless, Stainless

World = Impure, Inert, Full of sorrow, With forms and modifications

Therefore they argue:

“A cause and its effect MUST share similar characteristics.”

But here:

Consciousness cannot produce non-conscious matter

Purity cannot produce impurity

Formlessness cannot produce form

Changelessness cannot produce change

Hence:

The world cannot have come from Brahman.

2️⃣ Appeal to Loka-Anubhava — Common Human Experience

They argue:

The world is clearly inert and impure.

Mountains, oceans, forests → inert

The body, senses → inert

The universe (pañca-bhūtas) → inert

Human life is full of sorrow, desire, delusion, fatigue

But Brahman:

Is Satyam, Jñānam, Anantam

Is pure consciousness

Is nirguṇa, devoid of all impurities

Thus:

“How can such an impure, suffering world come from pure bliss-consciousness?”

3️⃣ The Sāṅkhya Alternative — Prakṛti as the Cause

Sāṅkhyas reject Advaita and say:

“The world is born from Prakṛti, not Brahman.”

Because:

Prakṛti has three guṇas:

Sattva → joy

Rajas → sorrow

Tamas → delusion

Since the world shows these guṇas,

the cause must ALSO possess these guṇas.

But Brahman is guṇa-atīta (beyond all guṇas).

Therefore they conclude:

“Guṇa-less Brahman cannot produce a guṇa-full world.”

4️⃣ The Cause–Effect Principle

Opponents give examples from everyday logic:

Clay → clay pots

Gold → gold ornaments

Meaning:

The nature of the effect must exist in the cause.

But:

Brahman has no impurity, no change, no form

The world is full of impurities, changes, and forms

Hence:

“Brahman cannot be the material cause of the world.”

5️⃣ The Conscious–Inert Problem

They argue:

“Consciousness never serves another consciousness.

Only inert matter serves consciousness.”

Examples:

Master–servant analogy:

The master (conscious being) is served by the servant’s body (inert matter), not his consciousness.

Lamp analogy:

One lamp does not ‘light’ another lamp.

Light serves the dark, not other light.

Thus:

“If Brahman is consciousness, It cannot produce or govern an inert world.”

6️⃣ Human Experience: Joy, Sorrow, Delusion

The world is filled with:

Pleasure

Pain

Delusion

Sleep

Emotional fluctuations (grief, depression, excitement)

But Brahman is:

Bliss

Peace

Undisturbed

Changeless

Therefore:

“A world full of sorrow cannot arise from Bliss itself.”

7️⃣ Ultimate Conclusion of the Opponent

Combining all arguments, they say:

The world is impure

The world is inert

The world is full of modifications

The world is subject to joy–sorrow–delusion

All this is opposite to Brahman’s nature

Thus:

**“The world must arise from something of similar nature —

an impure, inert cause like Prakṛti, not Brahman.”**

⭐ One-Line English Summary (Fourth Part)

The critics argue that since the world is impure, inert, and full of change—qualities completely opposed to the pure, conscious, changeless nature of Brahman—it is impossible for Brahman to be the direct cause of such a world; therefore, they propose Prakṛti as the real cause.