Mencius - Book 7, Part 2, Chapter 36

Mencius said, 'Tsang Hsî was fond of sheep-dates, and his son, the philosopher Tsang, could not bear to eat sheep-dates.'

Kung-sun Ch'âu asked, saying, 'Which is best, minced meat and broiled meat, or sheep-dates?' Mencius said, 'Mince and broiled meat, to be sure.' Kung-sun Ch'âu went on, 'Then why did the philosopher Tsang eat mince and broiled meat, and would not eat sheep-dates?' Mencius answered, 'For mince and broiled meat there is a common liking, while that for sheep-dates was peculiar. We avoid the name, but do not avoid the surname. The surname is common; the name is peculiar.'

~ James Legge translation via nothingistic.org ~

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