THEAETETUS: They are.

STRANGER: Then let us sum them up under the name of productive or

creative art.

THEAETETUS: Very good.

STRANGER: Next follows the whole class of learning and cognition;

then comes trade, fighting, hunting. And since none of these produces

anything, but is only engaged in conquering by word or deed, or in

preventing others from conquering, things which exist and have been

already produced--in each and all of these branches there appears to be

an art which may be called acquisitive.

THEAETETUS: Yes, that is the proper name.

STRANGER: Seeing, then, that all arts are either acquisitive or

creative, in which class shall we place the art of the angler?

THEAETETUS: Clearly in the acquisitive class.

STRANGER: And the acquisitive may be subdivided into two parts: there is

exchange, which is voluntary and is effected by gifts, hire, purchase;

and the other part of acquisitive, which takes by force of word or deed,

may be termed conquest?

Sophist