When we call our body real, as contrasted with things imaginary, we recognize that this group of experiences belongs to the class described; it is given in sensation, and is not merely thought of.
It will be observed that, in distinguishing between sensations and things imaginary, we never go beyond the circle of our experiences.

We do not reach out to a something _beyond_ or _behind_ experiences, and say: When such a reality is present, we may affirm that we have a sensation, and when it is not, we may call the experience imaginary.
If there were such a reality as this, it would do us little good, for since it is not supposed to be perceived directly, we should have to depend upon the sensations to prove the presence of the reality, and could not turn to the reality and ask it whether we were or were not experiencing a sensation.

The distinction between sensations and what is imaginary is an _observed_ distinction.

It can be _proved_ that some experiences are sensory and that some are not.

This means that, in drawing the distinction, we remain within the circle of our experiences.
There has been much unnecessary mystification touching this supposed reality behind experiences.