Comprehension of a paragraph?

For economists of conventional mood, the reminders that the poor still exist are a useful way of allaying uneasiness about the relevance of conventional economic goals. For some people, wants must be synthesized. Hence, the importance of the goods to them is not per se very high. So much may be conceded. But others are far closer to physical need. And hence we must not be cavalier about the urgency of providing them with the most for the least.
I was wondering what the main idea of this paragraph is?

Thank yoU!!!