Zdzisław Mach, a sociologist from the Jagiellonian University, explains that when Poles were forced to resettle in the West, which they resented, they had to leave the land they considered sacred and move to areas inhabited by the enemy. In addition, Communist authorities did not initially invest in the Recovered Territories because, like the settlers, for a long time they were unsure about the future of these lands. As Mach says, people in Western Poland for years lived "on their suitcases", with all their belongings packed in case of return to the East.[23]