Verse 41

सत्यासत्यं जगद्रूपमन्तःकरणबिम्बिता ।आत्मसंवित्तनोतीदमालोकमिव सूर्यभा

In plain words

The Self's awareness, reflected in the inner faculty, spreads out this form of the world, real and unreal both -- as the sun's radiance spreads light.