Mencius - Book 5, Part 1, Chapter 1B

'To be delighted in by all the scholars of the kingdom, is what men desire, but it was not sufficient to remove the sorrow of Shun. The possession of beauty is what men desire, and Shun had for his wives the two daughters of the Tî, but this was not sufficient to remove his sorrow. Riches are what men desire, and the kingdom was the rich property of Shun, but this was not sufficient to remove his sorrow. Honors are what men desire, and Shun had the dignity of being sovereign, but this was not sufficient to remove his sorrow. The reason why the being the object of men's delight, with the possession of beauty, riches, and honors were not sufficient to remove his sorrow, was that it could be removed only by his getting his parents to be in accord with him.

'The desire of the child is towards his father and mother. When he becomes conscious of the attractions of beauty, his desire is towards young and beautiful women. When he comes to have a wife and children, his desire is towards them. When he obtains office, his desire is towards his sovereign: if he cannot get the regard of his sovereign, he burns within. But the man of great filial piety, to the end of his life, has his desire towards his parents. In the great Shun I see the case of one whose desire at fifty year's was towards them.'
~ James Legge translation via nothingistic.org ~

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