Were this the end of the matter, one might think that whenever we had successfully lived through an activity-situation we should have to be permitted, without provoking contradiction, to say that we had been really active, that we had met real resistance and had really prevailed. Lotze somewhere says that to be an entity all that is necessary is to _gelten_ as an entity, to operate, or be felt, experienced, recognized, or in any way realized, as such.[97] In our activity-experiences the activity assuredly fulfils Lotze's demand. It makes itself _gelten_. It is witnessed at its work. No matter what activities there may really be in this extraordinary universe of ours, it is impossible for us to conceive of any one of them being either lived through or authentically known otherwise than in this dramatic shape of something sustaining a felt purpose against felt obstacles and overcoming or being overcome. What 'sustaining' means here is clear to anyone who has lived through the experience, but to no one else; just as 'loud,' 'red,' 'sweet,' mean something only to beings with ears, eyes, and tongues. The _percipi_ in these originals of experience is the _esse_; the curtain is the picture. If there is anything hiding in the background, it ought not to be called activity, but should get itself another name. This seems so obviously true that one might well experience astonishment at finding so many of the ablest writers on the subject flatly denying that the activity we live through in these situations is real. Merely to feel active is not to be active, in their sight. The agents that appear in the experience are not real agents, the resistances do not really resist, the effects that appear are not really effects at all.[98] It is evident from this that mere descriptive analysis of any one of our activity-experiences is not the whole story, that there is something still to tell _about_ them that has led such able writers to conceive of a _Simon-pure_ activity, of an activity _an sich_, that does, and doesn't merely appear to us to do, and compared with whose real doing all this phenomenal activity is but a specious sham.