Mencius - Book 4, Part 1, Chapter 9B

'Accordingly, as the otter aids the deep waters, driving the fish into them, and the hawk aids the thickets, driving the little birds to them, so Chieh and Châu aided T'ang and Wû, driving the people to them.

'If among the present rulers of the kingdom, there were one who loved benevolence, all the other princes would aid him, by driving the people to him. Although he wished not to become sovereign, he could not avoid becoming so.

'The case of one of the present princes wishing to become sovereign is like the having to seek for mugwort three years old, to cure a seven years' sickness. If it have not been kept in store, the patient may all his life not get it. If the princes do not set their wills on benevolence, all their days will be in sorrow and disgrace, and they will be involved in death and ruin.

'This is illustrated by what is said in the Book of Poetry,

"How otherwise can you improve the kingdom?
You will only with it go to ruin."'

~ James Legge translation via nothingistic.org ~

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