It means, really, going into the whole question of self-fulfillment and the conflict of the opposites, and to see if there is any reality for the thinker, the experiencer who is everlastingly craving for more experience, more sensation, wider horizons.

Is there only thinking and no thinker, only a state of experiencing and no experiencer? The moment the experiencer comes into being through memory, there must be conflict. I think that is fairly simple if you have thought about it. It is the very root of self-contradiction. With most of us the thinker has become all-important but not the thought, the experiencer but not the state of experiencing.

This really involves the question we were discussing the other day of what we mean by seeing. Do we see life, another person, a tree through ideas, opinions, memories? Or are we directly in communion with life, the person, or the tree? I think we see through ideas, memories, and judgments, and that therefore we never see. In the same way, do I see myself as I ‘actually am’, or do I see myself as what I ‘should be’, or what I ‘have been’? In other words, is consciousness divisible? We talk very easily about the unconscious and the conscious mind and the many different layers in them both. There are such layers, such divisions, and they are in opposition with each other. Have we to go through all these layers one by one and discard them or try to understand them—which is a very tiresome and ineffectual way of dealing with the problem—or is it possible to brush all the divisions, the whole thing aside and be aware of the total consciousness?

The Collected Works of J. Krishnamurti -Volume XII 1961: There Is No Thinker, Only Thought
Jiddu Krishnamurti