But the fact is, from the spiritual point of view, that it is only after the destruction of the Defilements and a release from every form of attachment that one’s inmost being gets purified and sees itself as it really is, not indeed as an ego standing in contrast to the not-ego, but as something transcending opposites and yet synthesising them in itself. What is destroyed is the dualism of things and not their oneness. And the release means going back to one’s original abode. The insight therefore is to see unity in multiplicity and to understand the opposition of the two ideas as not conditioning each other but as both issuing from a higher principle; and this is where perfect freedom abides. When the mind is trained enough, it sees that neither negation (_niratta_) nor affirmation (_atta_) applies to reality but that the truth lies in knowing things as they are or rather as they become. A mind really sincere and thoroughly purified is the necessary preliminary to the understanding of reality in its suchness. As the result we have “ti yathābhūtaṁ pajānāti,” and this came later to be formulated by the Mahayanists into the doctrine of Thatness or Suchness (_bhūtatathatā_). The trained mind that has gone through the four dhyana exercises as prescribed in the Nikāyas further develops into what is known among the Mahayanists as the Ādarśa-jñānam (mirror-insight), which corresponds to the Bhūta-ñāṇa in the Anguttara Nikāya. The last simile in the Buddha’s discourse on the fruits of the Sāmañña life, which sums up the spiritual attainment of the Buddhists, becomes now quite intelligible. It runs thus: “Just, O king, as if in a mountain fastness there were a pool of water, clear, translucent, and serene; and a man, standing on the bank and with eyes to see, should perceive the oysters and the shells, the gravel and the pebbles and the shoals of fish, as they move about or lie within it: he would know: This pool is clear, transparent, and serene, and there within it are the oysters and the shells, and the sand and gravel, and the shoals of fish are moving about or lying still.”