From a Brief History of Everything by Ken Wilber

You know the Zen koan, “What is the sound of one hand clapping?” Usually, of course, we need two hands to clap—and that is the structure of typical experience. We have a sense of ourselves as a subject in here, and the world as an object out there. We have these “two hands” of experience, the subject and the object. And typical experience is a smashing of these two hands together to make a commotion, a sound. The object out there smashes into me as a subject, and I have an experience—the two hands clap together, and experience emerges.

And so the typical structure of experience is like a punch in the face. The ordinary self is the battered self—it is utterly battered by the universe “out there.” The ordinary self is a series of bruises, of scars, the results of these two hands of experience smashing together. This bruising is called duhkha, suffering. As Krishmamurti used to say, in that gap between the subject and the object lies the entire misery of humankind.

But with the nondual state, suddenly there are not two hands. Suddenly, the subject and the object are one hand. Suddenly, there is nothing outside of you to smash into you, bruise you, torment you.

Suddenly, you do not have an experience, you are every experience that arises, and so you are instantly released into all space: you and the entire Kosmos are one hand, one experience, one display, one gesture of great Perfection. There is nothing outside of you that you can want, or desire, or seek, or grasp—your soul expands to the corners of the universe and embraces all with infinite delight. You are utterly full, utterly saturated, so full and saturated that the boundaries to the Kosmos completely explode and leave you without date or duration, time or location, awash in an ocean of infinite care. You are released into the All, as the All—you are the self-seen radiant Kosmos, you are the universe of One Taste, and the taste is utterly infinite.

So what is the sound of that one hand clapping? What is the taste of that One Taste? When there is nothing outside of you that can hit you, hurt you, push you, pull you—what is the sound of that one hand clapping?

Continued…