You are the substance of consciousness - Ashtavakra Gita

तात चिन्मात्ररूपोऽसि न ते भिन्नमिदं जगत् ।
अतः कस्य कथं कुत्र हेयोपादेयकल्पना ॥

You are the substance of consciousness. The world is You. Who is it that thinks he can accept or reject it? And where does he stand? - Ashtavakra Gita