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 point on which judgment has to be delivered is whether the accused is guilty of causing his victim's death. The same type of case will also bring conjecture into play, when, for example, the question in dispute is whether the accused shall be punished with banishment for life or for five years. For the question then is whether he caused his death willingly or not.
Again, there are questions concerned with numerical quantity which turn on a point of law, such as the questions whether thirty
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rewards are due to Thrasybulus, [*](i.e. for his overthrow of the thirty tyrants; cp. II. vi. 26. ) or whether, when two thieves have stolen a sum of money, they are each to be required to refund fourfold or twofold. But in these cases, too, valuation of the act is necessary, and yet the point of law also turns on quality.