Zoroastrian theology's emphasis on living the good life; the encouragement to create material wealth with the accompanying social obligations to put it to good use, explains the immensely extensive welfare system put in place by the Parsi community in India. Following the Arab conquest of Iran, the diminution in numbers and stature of the Zoroastrians in the ancestral land and the subsequent Parsi settlement in India, meant the marginalization of a people whose forebears once ruled a mighty empire. Once the Parsis acquired financial success, they put in place a community-wide network of benevolent institutions. This was followed by extending a muscular benevolence to the Zoroastrians of Iran, which evolved into a highly structured undertaking to ensure the safeguarding of the community from virtual extinction. Thus, Zoroastrian philanthropy was as much a reaffirmation of religious traditions as it was a means of self-preservation.