Mencius - Book 3, Part 2, Chapter 4B

P'ang Kang said, 'The aim of the carpenter and carriagewright is by their trades to seek for a living. Is it also the aim of the superior man in his practice of principles thereby to seek for a living?' 'What have you to do,' returned Mencius, 'with his purpose? He is of service to you. He deserves to be supported, and should be supported. And let me ask, Do you remunerate a man's intention, or do you remunerate his service.' To this Kang replied, 'I remunerate his intention.'

Mencius said, 'There is a man here, who breaks your tiles, and draws unsightly figures on your walls; his purpose may be thereby to seek for his living, but will you indeed remunerate him?' 'No,' said Kang; and Mencius then concluded, 'That being the case, it is not the purpose which you remunerate, but the work done.'
~ James Legge translation via nothingistic.org ~

Go here to read the introductory post to this serialized version of the Works of Mencius.