and weight to 45% and 1.46 grams. The following year he decreased the amount of base metal in the denarius while adding more silver, raising the silver purity and weight again to 50.5% and 1.50 grams. Additionally, during his reign taxes were lightened; literature, art and science were encouraged; and, for the convenience of the people, loan offices were instituted for lending money at a moderate rate of interest. In religious matters, Alexander preserved an open mind. According to the Historia Augusta, he wished to erect a temple to Jesus but was dissuaded by the pagan priests; however, this claim is unreliable as the Historia Augusta is considered untrustworthy by historians, containing significant amounts of information that is false and even invented, extending to when it was written and the number of authors it was written by. He allowed a synagogue to be built in Rome, and he gave as a gift to this synagogue a scroll of the Torah known as the Severus Scroll. In legal matters, Alexander did much to aid the rights of his soldiers. He confirmed that soldiers could name anyone as heirs in their will, whereas civilians had strict restrictions over who could become heirs or receive a legacy. He also confirmed that soldiers could free their slaves in their wills, protected the rights of soldiers to their property when they were on campaign, and reasserted that a soldier's property acquired in or because of military service (his castrense peculium) could be claimed by no one else, not even the soldier's father. Persian War On the whole, Alexander's reign was prosperous until the rise of the Sassanids under Ardashir I. In 231 AD, Ardashir invaded the Roman provinces of the east, overrunning Mesopotamia and penetrating possibly as far as Syria and Cappadocia, forcing from the young Alexander a vigorous response. Of the war that followed there are various accounts. According to the most detailed authority, Herodian, the Roman armies suffered a number of humiliating setbacks and defeats, while according to the Historia Augusta as well as Alexander's own dispatch to the Roman Senate, he gained great victories. Making Antioch his base, he organized in 233 a three-fold invasion of the Sassanian Empire; at the head of the main body he himself advanced to recapture northern Mesopotamia, while another army invaded Media through the mountains of Armenia, and a third advanced from the south in the