the quality of being simple; free from complexity, intricacy, or division into parts.  It is bound to the essential and eschews all else

If I were possessed of the slightest knowledge,
traveling on the great Way,
My only fear would be to go astray.
The great Way is quite level,
but the people are much enamored of mountain trails.
– Tao Te Ching 53

Now, a man who does not desire – who is without desires, who is freed from desires, whose desires are fulfilled, whose only desire is his self – his vital functions do not depart.  Brahaman he is, and to brahman he goes.
– Brihadaranyaka Upanishad 4.4.6

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