In plain words
The first three, Sat, Cit and Ānanda, are man's true forms. Names and forms are made up. Truly, man's nature is most wondrous. It is pure. It is selfless. But because some faults of Prakṛti are present, some impurity has been forming in humanness, to some degree. It is most necessary that every individual recognise this principle of Sat, Cit and Ānanda that has come forth in man. This Ajñāna that has enveloped man does not go away with mere words. However much wealth one may have, however high the offices one may hold, however learned one may be, these cannot in the least remove this unrest that has enveloped the mind. The one divine medicine that removes this disease of Ajñāna is Ātma-jñāna alone.
Embodiments of Prema! The happiness, the joy, the comfort and the riches that come to man: we must not swell with delight at the sight of these. It is not merely a coming; a going is also taking place. These pleasures and sorrows are only like relatives who come and go. So man must not forget the divinity that is in humanness, nor yield to fleeting worldly pleasures and riches; he must make a fitting effort to recognise his own true form for himself. Man's body is like a bubble on the water. We must not live leaning on this alone. Whatever agitation there is in pleasure, the same agitation is in sorrow. Pleasure and sorrow, both of them, are bound up with agitation. To cling to such feelings, agitation itself in form, to choose them and forget his true nature, can never be the nature of man. The Ātma is eternal. It is beyond place and time. Inquiry into Ātma-jñāna itself is Sanātana Dharma. To follow this Sanātana Dharma, whose form is the inquiry into Ātma-jñāna, is the Dharma of the jīva. The nature of this body is that it comes to an end.
A house of filth, a servant's basket wasting with diseases, a tuber subject to the stir of birth, a thorn-bush that cannot cross the ocean of worldly life, arrows held in safe keeping; whenever we think on it, the body, never trust it any longer as steady, O mind; take refuge at the feet of Hari.
The five elements can trouble the body made of the five elements, but they cannot move in the least the Ātma-principle that is beyond the five elements.
Man means one who has faith. What is worthy of faith is humanness.