Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
The Greeks call this essential basis στάσις, a name which they hold was not invented by Hermagoras, but according to some was introduced by Naucrates, the pupil of Isocrates, according to others by Zopyrus of Clazomenae, although Aeschines in his speech against Ctesiphon [*](§ 206.) seems to employ the word, when he asks the jury not to allow Demosthenes to be irrelevant but to keep him to the stasis or basis of the case.
The term seems to be derived from the fact that it is on it that the first collision between the parties to the dispute takes place, or that it forms the basis or standing of the whole case. So much for the origin of the name. Now for its nature. Some have defined the basis as being the first conflict of the causes. The idea is correct, but the expression is faulty.
For the essential basis is not the first conflict, which we may represent by the clauses
You did such and such a thingand
I did not do it.It is rather the kind of question which arises from the first conflict,
You did it,
I did not,
Did he do it?,or
You did this,
I did not do this,
What did he do?It is clear from these examples, that the first sort of question depends on conjecture, the second on definition, and that the contending parties rest their respective cases on these points: the bases of these questions will therefore be of a conjectural or definitive character respectively.