 Anciently, there was no rule for the size of either the inner or the outer coffin. In middle antiquity, the inner coffin was made seven inches thick, and the outer one the same. This was done by all, from the sovereign to the common people, and not simply for the beauty of the appearance, but because they thus satisfied the natural feelings of their hearts [ren xin 人心]. (Mencius, 2B16; Legge 1960b: 221)