प्रमितिः संवित्स्वयंप्रभा प्रमाणम्, 'प्रज्ञानं ब्रह्म' इति श्रुतेः ।'ज्ञानस्वरूपमत्यन्तनिर्मलं परमार्थतः ।तमेबार्थस्वरूपेण भ्रान्तिदर्शनतः स्थितम्' इति विष्णुपुराणे ।प्राणा इन्द्रियाणि यत्र जीवे निलीयन्ते तत्परतन्त्रत्वात्, देहस्य धारका: प्राणापानादयो वा तस्मिन्निलीयन्ते, प्राणितीति प्राणो जीव: परे पुंसि निलीयत इति वा प्राणान् जीवांश्च संहरन्निति वा प्राणनिलयः ।पोपयन्नन्नरूपेण प्राणान् प्राणभृत् प्राणिनो जीवयन् प्राणाख्यैः पवनैः प्राणजीवनः, 'न प्राणेन नापानेन मर्त्यो जीवति कञ्चन ।इतरेण तु जीवन्ति यस्मिन्नेताबुपाश्रितो' इति मन्त्रवर्णात् ।तत्त्वं तथ्यममृतं सत्यं परमार्थः सतत्त्वमित्येते एकार्थवाचिनः परमार्थसतो ब्रह्मणो वाचकाः शब्दाः ।तत्त्वं स्वरूपं यथावद्वेत्तीति तत्त्ववित् ।एक श्वासावात्मा चेति एकात्मा, 'आत्मा वा इदमेक एवाग्र आसीत्' इति श्रुतेः, 'यच्चाप्नोति यदादत्ते यच्चात्ति विषयानिह ।यच्चास्य संततो भावस्तस्मादात्मेति गीयते' इति स्मृतेश्च ।'जायते अस्ति वर्धते विपरिणमते अपक्षीयते नश्यति' इति षड्भावविकारानतीय गच्छतीति जन्ममृत्यु जरातिगः, 'न जायते म्रियते वा विपश्चित्' इति मन्त्रवर्णात् ॥
In plain words
The Supreme is pure cognition, self-luminous, and the ultimate standard of truth, as declared by the Upanishadic text: 'Consciousness is Brahman.' The Vishnu Purana proclaims: 'Though fundamentally pure and of the nature of pure knowledge, it appears in worldly forms through the delusion of ignorance.' He is Prāṇanilaya because all vital breaths and living beings dissolve into Him during dissolution, and because He withdraws all creation back into Himself. He is Prāṇabhṛt and Prāṇajīvana because He sustains all creatures by providing nourishment and animating the vital winds through which they live, exactly as the scripture declares: 'No mortal lives merely by the breath of prāna or apāna, but all live by that supreme support upon which these two depend.' Terms such as tattva, tathya, amṛta, satya, and paramārtha are synonyms denoting the supreme reality of Brahman. One who knows this essential truth directly is a tattvavit. He is the one undivided Self, for scripture states: 'In the beginning, this universe was the Self alone, one without a second,' and tradition records: 'Because He pervades all, absorbs all, experiences all objects, and maintains continuous existence, He is proclaimed as the Ātman.' He is beyond birth, death, and decay, having completely transcended the six fundamental worldly modifications of origin, existence, growth, transformation, decline, and destruction, fulfilling the scriptural truth that the wise consciousness is never born and never dies.
Close to the Sanskrit
Correct knowledge, consciousness, self-luminous, the standard of proof, from the sruti 'Consciousness is Brahman'. From the Vishnu Purana: 'Of the nature of knowledge, extremely pure fundamentally, situated thus in its own real nature through illusory perception.' Pranas are the senses where beings dissolve due to dependence, or the upholders of the body like prana and apana dissolve in him; or because he breathes he is prana, the living soul dissolves in the supreme purusha, or because he withdraws pranas and souls he is pranalaya. Nourishing pranas in the form of food as pranabhrt, enlivening living beings with winds named pranas as pranajivana, from the mantra text 'No mortal lives by prana or by apana, but they live by another upon which these two depend.' Tattvam, tathyam, amrtam, satyam, paramarthah, satattvam—these are synonymous words denoting Brahman, the truly existent. Tattvavit is one who knows reality as it is. Ekatma is the one single Atman, from the sruti 'In the beginning this was Atman alone, one only', and from the smriti 'Because he obtains everything, takes everything, enjoys objects here, and has continuous existence, therefore he is sung as Atman.' Janmamrtyujaratigah is one who goes beyond birth, death, and old age, having bypassed the six modifications of existence beginning with 'is born, exists, grows, transforms, wanes, perishes', from the mantra text 'The wise one is not born nor dies.'