p. 183
विज्ञातव्यं प्रयत्नेन श्रोतव्यं दृश्यमेव च ।एकः सर्वत्रगो ह्यात्मा केवलश्चितिमात्रकः ॥
In plain words
Make the effort: this is to be known, this is to be heard, this is to be seen. For the Ātman is one, present everywhere, standing alone, and nothing but consciousness.
Close to the Sanskrit
It is to be known with effort, to be heard, and to be seen indeed; for the Self is one, all-pervading, alone, consisting of nothing but consciousness.