But to admit the independence of intuition as regards concept does not suffice to give a true and precise idea of intuition. Another error arises among those who recognize this, or who, at any rate, do not make intuition explicitly dependent upon the intellect. This error obscures and confounds the real nature of intuition. By intuition is frequently understood the _perception_ or knowledge of actual reality, the apprehension of something as _real_. Certainly perception is intuition: the perception of the room in which I am writing, of the ink-bottle and paper that are before me, of the pen I am using, of the objects that I touch and make use of as instruments of my person, which, if it write, therefore exists;--these are all intuitions. But the image that is now passing through my brain of a me writing in another room, in another town, with different paper, pen and ink, is also an intuition. This means that the distinction between reality and non-reality is extraneous, secondary, to the true nature of intuition. If we assume the existence of a human mind which should have intuitions for the first time, it would seem that it could have intuitions of effective reality only, that is to say, that it could have perceptions of nothing but the real. But if the knowledge of reality be based upon the distinction between real images and unreal images, and if this distinction does not originally exist, these intuitions would in truth not be intuitions either of the real or of the unreal, but pure intuitions. Where all is real, nothing is real. The child, with its difficulty of distinguishing true from false, history from fable, which are all one to childhood, can furnish us with a sort of very vague and only remotely approximate idea of this ingenuous state. Intuition is the indifferentiated unity of the perception of the real and of the simple image of the possible. In our intuitions we do not oppose ourselves to external reality as empirical beings, but we simply objectify our impressions, whatever they be. [Sidenote] _Intuition and the concepts of space and time._