In plain words
In man himself there is Satya. There is Jñāna. There is the endless. That itself is the principle of Brahman. This is what they called "Satyaṃ jñānam anantaṃ Brahma." Teaching such paths in many ways, many great ṛṣis have laboured to establish Dharma in the world.
Further, in man there are three more places of chief importance. Art, philosophy and religion. The oneness of these three is itself the human form. To recognise this we must undertake certain kinds of sādhana. Kaḷa, that is, art; philosophy; religion: what is the evenness of these three? Philosophy we call the vision of Satya. What kind of Satya is this Satya? We think Satya is this: what was seen, as it was seen; what was heard, as it was heard; and doing what was said, just as it was said. This Satya keeps changing from moment to moment. But they said, "Trikālabādhyaṃ satyaṃ." It stays the same in all times. We must call to mind, moment after moment, the inner meaning of such sacred humanness. In man himself is the principle of Brahman. Man himself is the embodiment of Jñāna. This principle of the Ātma pervades him everywhere. We must try to recognise this Satya. A sculptor took a stone and went on shaping it in many ways. After some days had passed, he drew out of it a figure of Kṛṣṇa. But did this figure of Kṛṣṇa go in from outside and enter it, or did it come out of the rock? No. No. The stone is only the instrument. He carves into it an art that is in man, a form that is in man, and goes on bringing it out into view. Before making this image he must picture the whole image in his own mind. Only after picturing it so does that embodiment of art make an image out of it. Here, is the stone what matters? Or is the image what matters? Is the sculptor what matters? The sculptor alone is the chief one. That is why, if we recognise the chief principle among these three, all the rest take shape as mere instruments. Experiences, Experiencer, Experience: this is what they called See, seen and seeing. That is, the one who sees, what is shown, and the seeing: this is the oneness of these three. So all the arts are contained in man. That is why the teachers of Vedānta said, "Heart is inside, art is outside." All this art has come from the heart itself.
So the whole of creation is contained in man. Only one who tries to recognise such divinity is a holy person. For such a man there is no difference between "others" and "mine". Only then do the keeping of Satya and a life of Satya bear fruit. Siddhāśrama is the foremost place in Kerala. There is the very place where Viṣṇu took on the Vāmana Avatāra.