Sat-darshana Bhashya (translation)

Verse 15.

सत्यश्चिदात्मा विविधाकृतिश्चित्
सिध्यत्पृथक्सत्यचितो न भिन्ना।
भूषाविकाराः किमु सन्ति सत्यं
विना सुवर्ण पृथगन लोके ॥

Consciousness, the Self alone is real. Manifold is its form indeed. Can they be real from the one apart? Separate are not the ornamental forms from gold, their Reality. Can they be?

The character of the Self is Consciousness which is Truth. It is one. The various forms of Consciousness are not separate from it. These forms do not exist apart from the one Consciousness; just as various ornaments are formed of one substance, gold, and the gold persists in all its mutable forms, the one Consciousness persists in all subjective soul-being or in the objective world-existence. We have already noted that one substance, Swaroopa, manifests in a multiple form. Here the character of that substance is clearly affirmed to be the Supreme Consciousness, of which ourselves and the world about us are but subtler and grosser forms.

The basis of the I-notion must be discovered by the discerning intelligence and that is surely an aid to the questing mind.