Mencius - Book 4, Part 1, Chapter 6

Mencius said, 'The administration of government is not difficult; it lies in not offending the great families. He whom the great families affect, will be affected by the whole State; and he whom any one State affects, will be affected by the whole kingdom. When this is the case, such an one's virtue and teachings will spread over all within the four seas like the rush of water.'
~ James Legge translation via nothingistic.org ~

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