[ULPIANUS libro quinquagesimo sexto ad edictum. ] §47.10.3.prIllud relatum peraeque est eos, qui iniuriam pati possunt, et facere posse.
[ULPIANUS, On the Edict, book fifty-six.] It is equally accepted that those who are capable of suffering an iniuria are also capable of committing it.
§47.10.3.1Sane sunt quidam, qui facere non possunt, ut puta furiosus et inpubes, qui doli capax non est: namque hi pati iniuriam solent, non facere.
Indeed, there are certain persons who cannot commit it, as for example a madman and a minor who is incapable of malicious intent; for these are accustomed to suffer an iniuria, not to commit it.
cum enim iniuria ex affectu facientis consistat, consequens erit dicere hos, siue pulsent siue conuicium dicant, iniuriam fecisse non uideri.
For since an iniuria consists in the intention of the doer, it will follow that we say that these persons, whether they strike or utter abuse, are not deemed to have committed an iniuria.
§47.10.3.2Itaque pati quis iniuriam, etiamsi non sentiat, potest, facere nemo, nisi qui scit se iniuriam facere, etiamsi nesciat cui faciat.
Therefore, anyone can suffer an iniuria, even if he does not perceive it, but no one can commit it except one who knows that he is committing an iniuria, even if he does not know against whom he is committing it.
§47.10.3.3Quare si quis per iocum percutiat aut dum certat, iniuriarum non tenetur.
Wherefore, if anyone should strike in jest or while competing, he is not held liable for iniuriae.
§47.10.3.4Si quis hominem liberum ceciderit, dum putat seruum suum, in ea causa est, ne iniuriarum teneatur.
If anyone should strike a free man while thinking him to be his own slave, he is in such a position that he is not held liable for iniuriae.