THE BUGBEAR OF THE "UNKNOWABLE."-- It is very important to recognize that we must not go on talking about appearance and reality, as if our words really meant something, when we have quite turned our backs upon our experience of appearances and the realities which they represent.
That appearances and realities are connected we know very well, for we perceive them to be connected.

What we see, we can touch.

And we not only know that appearances and realities are connected, but we know with much detail what appearances are to be taken as signs of what realities.

The visual experience which I call the house as seen from a distance I never think of taking for a representative of the hat which I hold in my hand.

This visual experience I refer to its own appropriate touch thing, and not to another.