THEAETETUS: True.

STRANGER: And there are images of them, which are not them, but which

correspond to them; and these are also the creation of a wonderful

skill.

THEAETETUS: What are they?

STRANGER: The appearances which spring up of themselves in sleep or by

day, such as a shadow when darkness arises in a fire, or the reflection

which is produced when the light in bright and smooth objects meets

on their surface with an external light, and creates a perception the

opposite of our ordinary sight.

THEAETETUS: Yes; and the images as well as the creation are equally the

work of a divine hand.

STRANGER: And what shall we say of human art? Do we not make one house

by the art of building, and another by the art of drawing, which is a

sort of dream created by man for those who are awake?

THEAETETUS: Quite true.

STRANGER: And other products of human creation are also twofold and go

in pairs; there is the thing, with which the art of making the thing is

concerned, and the image, with which imitation is concerned.

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Sophist