The great Adi Shankara (first Shankaracharya) of the eighth century summarized the entirety of Advaita Vedanta (non-dualistic philosophy) in six stanzas. When a young boy of eight, while wandering in the Himalayas, seeking to find his guru, he encountered a sage who asked him, "Who are you?" The boy answered with these stanzas, which are known as "Nirvana Shatakam" or "Atma Shatakam." "Nirvana" is complete equanimity, peace, tranquility, freedom and joy. "Atma" is the True Self. The sage the boy was talking to was Swami Govindapada Acharya, who was, indeed, the teacher he was looking for.
These few verses can be of tremendous value to progress in contemplation practices that lead to Self-Realization.
मनोबुद्धयहंकार चित्तानि नाहं, न च श्रोत्रजिव्हे न च घ्राणनेत्रे । न च व्योम भूमिर्न तेजो न वायुः, चिदानन्दरूपः शिवोऽहम् शिवोऽहम् ।। 1 ।।
Om. I am neither mind, intelligence, ego, nor chitta,
Neither ears nor tongue nor the senses of smell and sight;
Nor am I ether, earth, fire, water, or air:
I am Pure Knowledge and Bliss: I am Siva! I am Siva!
न च प्राणसंज्ञो न वै पंचवायुः, न वा सप्तधातुः न वा पञ्चकोशः । न वाक्पाणिपादं न चोपस्थपायु, चिदानन्दरूपः शिवोऽहम् शिवोऽहम् ।। 2 ।।
I am neither the prana, nor the five vital breaths,
Neither the seven elements of the body nor its five sheaths,
Nor hands nor feet nor tongue, nor the organs of sex and voiding:
I am Pure Knowledge and Bliss: I am Siva! I am Siva!
न मे द्वेषरागौ न मे लोभमोहौ, मदो नैव मे नैव मात्सर्यभावः । न धर्मो न चार्थो न कामो न मोक्षः, चिदानन्दरूपः शिवोऽहम् शिवोऽहम् ।। 3 ।।
Neither loathing nor liking have I, neither greed nor delusion;
No sense have I of ego or pride, neither dharma nor moksha;
Neither desire of the mind nor object for its desiring:
न पुण्यं न पापं न सौख्यं न दुःखं, न मन्त्रो न तीर्थो न वेदा न यज्ञ । अहं भोजनं नैव भोज्यं न भोक्ता, चिदानन्दरूपः शिवोऽहम् शिवोऽहम् ।। 4 ।।
Neither right nor wrongdoing am I, neither pleasure nor pain,
Nor the mantra, the sacred place, the Vedas, the sacrifice;
I am Pure Knowledge and Bliss: I am Siva! I am Siva!
न मे मृत्युशंका न मे जातिभेदः, पिता नैव मे नैव माता न जन्मः । न बन्धुर्न मित्रं गुरूर्नैव शिष्यः, चिदानन्दरूपः शिवोऽहम् शिवोऽहम् ।। 5 ।।
Death or fear I have none, nor any distinction of caste;
Neither father nor mother nor even a birth have I;
Neither friend nor comrade, neither disciple nor guru:
I am Pure Knowledge and Bliss: I am Siva! I am Siva!
अहं निर्विकल्पो निराकार रूपो, विभुत्वाच सर्वत्र सर्वेन्द्रियाणाम् । न चासङत नैव मुक्तिर्न मेयः, चिदानन्दरूपः शिवोऽहम् शिवोऽहम् ।। 6 ।।
I have no form or fancy; the All-pervading am I;
Neither salvation am I, nor anything that may be known:
I am Pure Knowledge and Bliss: I am Siva! I am Siva!
-Adi Shankaracharya