Mobility does not involve large investments in infrastructure. We are familiar with agencies of charity or service that become identified with their real estate. Long before the first meal is served or the first medicine is distributed, humanitarian organizations set up a building to house staff -responsible for gathering and distributing funds. This is usually built according to professional standards and would seem like a palace to those on whose account it exists. There is a danger that those who work in such a building will soon begin to think like the rich, to attach themselves more closely to the affluent from whom they receive their resources than to the poor to whom they minister. Even while they give their services generously, they may yet be tempted to hold back something of themselves. The lifestyle generated by the building forces them to live in two worlds, in time they may forget what it is like to be needy.
Michael Casey
Fully Human, Fully Divine, p. 162