Institutio Oratoria

But just as the advocate who rests his case on the intention of the law must wherever possible impugn the letter of the law, so he who defends the letter of the law must also seek to gain support from the intention. Again, in cases concerned with wills it sometimes happens that the intention of the testator is clear, though it has not been expressed in writing: an example of this occurs in the trial of Curius, which gave rise to the well-known argument between Lucius Crassus and Scaevola.

A second heir had been appointed in the event of a posthumous son dying while a minor. No posthumous son was born. The next of kin claimed the property. Who could doubt that the intention of the testator was that the same man should inherit in the event of the son not being born who would have inherited in the event of his death? But he had not written this in his will.