आत्मैव सर्वं त्रिजगत्तदन्यत्तु न किंचन ।तत्त्वं किंचित्त्वमात्मान्यद्यदि तत्त्वं न किंचन
In plain words
The Self alone is the whole triple world; other than that, there is nothing whatsoever. So if you are something other than the Self, then you are nothing at all.