Essays in Radical Empiricism · William James
HOW TWO MINDS CAN KNOW ONE THING[68]
In [the essay] entitled 'Does Consciousness Exist?' I have tried to show that when we call an experience 'conscious,' that does not mean that it is suffused throughout with a peculiar modality of being ('psychic' being) as stained glass may be suffused with light, but rather that it stands in certain determinate relations to other portions of experience extraneous to itself. These form one peculiar 'context' for it; while, taken in another context of experiences, we class it as a fact in the physical world. This 'pen,' for example, is, in the first instance, a bald _that_, a datum, fact, phenomenon, content, or whatever other neutral or ambiguous name you may prefer to apply. I called it in that article a 'pure experience.' To get classed either as a physical pen or as some one's percept of a pen, it must assume a _function_, and that can only happen in a more complicated world. So far as in that world it is a stable feature, holds ink, marks paper and obeys the guidance of a hand, it is a physical pen. That is what we mean by being 'physical,' in a pen. So far as it is instable, on the contrary, coming and going with the movements of my eyes, altering with what I call my fancy, continuous with subsequent experiences of its 'having been' (in the past tense), it is the percept of a pen in my mind. Those peculiarities are what we mean by being 'conscious,' in a pen.
In Section VI of another [essay][69] I tried to show that the same _that_, the same numerically identical pen of pure experience, can enter simultaneously into many conscious contexts, or, in other words, be an object for many different minds. I admitted that I had not space to treat of certain possible objections in that article; but in [the last essay] I took some of the objections up. At the end of that [essay] I said that still more formidable-sounding objections remained; so, to leave my pure-experience theory in as strong a state as possible, I propose to consider those objections now.
Text from Project Gutenberg, public domain in the United States.