Both were commercial transactions to be judged by the commercial standard.

By setting a price in money on his service, the worker accepted the money measure for it, and renounced all clear claim to be judged by any other.

The sordid taint which this necessity imparted to the noblest and the highest sorts of service was bitterly resented by generous souls, but there was no evading it.

There was no exemption, however transcendent the quality of one's service, from the necessity of haggling for its price in the market-place.

The physician must sell his healing and the apostle his preaching like the rest.