Then, can he really be inside?
We see, thus, that the plain man and the man of science are quite right in accepting the external world.

The objective order is known as directly as is the subjective order.

Both are orders of experiences; they are open to observation, and we have, in general, little difficulty in distinguishing between them, as the illustrations given above amply prove.
18.

THE EXISTENCE OF MATERIAL THINGS .-- One difficulty seems to remain and to call for a solution.

We all believe that material things exist when we no longer perceive them.