This is one part of the doctrine of Karma-Yoga — activity, the duty of the householder. There is a passage later on, where it says that "if the householder dies in battle, fighting for his country or his religion, he comes to the same goal as the Yogi by meditation," showing thereby that what is duty for one is not duty for another. At the same time, it does not say that this duty is lowering and the other elevating. Each duty has its own place, and according to the circumstances in which we are placed, we must perform our duties.