In the same way you pump oil out of the sump where it accumulates, and back into the engine where it can enable useful work, you tax money out of rich, economic

In the same way you pump oil out of the sump where it accumulates, and back into the engine where it can enable useful work, you tax money out of rich, economically active people where it accumulates and inject it back into poor people, where it enables useful work. The poor will spend it, and it will accumulate with the rich again soon enough, but it enables economic activity along the way.