Mantra 1

तस्य ह वा एतस्यैवं पश्यत एवं मन्वानस्यैवं विजानत आत्मतः प्राण आत्मत आशात्मतः स्मर आत्मत आकाश आत्मतस्तेज आत्मत आप आत्मत आविर्भावतिरोभावावात्मतोऽन्नमात्मतो बलमात्मतो विज्ञानमात्मतो ध्यानमात्मतश्चित्तमात्मतः संकल्प आत्मतो मन आत्मतो वागात्मतो नामात्मतो मन्त्रा आत्मतः कर्माण्यात्मत एवेदंसर्वमिति ॥ ७.२६.१ ॥

In plain words

For him who sees thus, thinks thus and understands thus, the breath is from the Self, hope is from the Self, memory is from the Self, space is from the Self, heat is from the Self, the waters are from the Self, appearing and disappearing are from the Self, food is from the Self, strength is from the Self, understanding is from the Self, meditation is from the Self, thought is from the Self, resolve is from the Self, mind is from the Self, speech is from the Self, name is from the Self, the sacred formulas are from the Self, the rites are from the Self; all this is from the Self alone.