Having reached this point, we may take up our thesis and improve it again. Still calling the reality by the name of q and letting the critic's feeling vouch for it, we can say that any other feeling will be held cognizant of q, provided it both resemble q, and refer to q, as shown by its either modifying q directly, or modifying some other reality, p or r, which the critic knows to be continuous with q. Or more shortly, thus: THE FEELING OF q KNOWS WHATEVER REALITY IT RESEMBLES, AND EITHER DIRECTLY OR INDIRECTLY OPERATES ON. If it resemble without operating, it is a dream; if it operate without resembling, it is an error. [Footnote: Among such errors are those cases in which our feeling operates on a reality which it does partially resemble, and yet does not intend: as for instance, when I take up your umbrella, meaning to take my own. I cannot be said here either to know your umbrella, or my own, which latter my feeling more completely resembles. I am mistaking them both, misrepresenting their context, etc. We have spoken in the text as if the critic were necessarily one mind, and the feeling criticised another. But the criticised feeling and its critic may be earlier and later feelings of the same mind, and here it might seem that we could dispense with the notion of operating, to prove that critic and criticised are referring to and meaning to represent the SAME. We think we see our past feelings directly, and know what they refer to without appeal. At the worst, we can always fix the intention of our present feeling and MAKE it refer to the same reality to which any one of our past feelings may have referred. So we need no 'operating' here, to make sure that the feeling and its critic mean the same real q. Well, all the better if this is so! We have covered the more complex and difficult case in our text, and we may let this easier one go. The main thing at present is to stick to practical psychology, and ignore metaphysical difficulties.