I do not know if you have ever noticed that when you give total attention there is complete silence.
And in that attention there is no frontier, there is no center, as the “me” who is aware or attentive.
That attention, that silence, is a state of meditation.
– J Krishnamurti
Krishnamurti had quite a lot to say about nondual perception. There are several pages in this site with more of his observations about perception and creativity, including: