Under these limits, the freeman’s privilege of exemption was carefully guarded, at least in theory. A slave while claiming freedom, or a man claimed as a slave, could not be exposed to torture;[1393] and even if a slave, when about to be tortured, endeavored to escape by asserting his freedom, it was necessary to prove his servile condition before proceeding with the legal torments.[1394] In practice, however, these privileges were continually infringed, and numerous edicts of the emperors were directed to repressing the abuses which constantly occurred. Thus we find Diocletian forbidding the application of torture to soldiers or their children under accusation, unless they had been dismissed the service ignominiously.[1395] The same emperor published anew a rescript of Marcus Aurelius declaring the exemption of patricians and of the higher imperial officers, with their legitimate descendants to the fourth generation;[1396] and also a dictum of Ulpian asserting the same privilege in favor of decurions, or local town councillors, and their children.[1397] In 376, Valentinian was obliged to renew the declaration that decurions were only liable in cases of _majestas_, and in 399 Arcadius and Honorius found it necessary to declare explicitly that the privilege was personal and not official, and that it remained to them after laying down the decurionate.[1398] Theodosius the Great, in 385, especially directed that priests should not be subjected to torture in giving testimony,[1399] the significance of which is shown by the fact that no slave could be admitted to holy orders.