折疑論 2.120

2.120

客曰。孝經以四事不毀為德之本（四事者。身體髮膚也。人之一身四體毛髮及其皮膚。皆是父母所生。不敢毀傷者。言人之行莫大於孝。故曰為德之本也）。

The guest said: 'The Classic of Filial Piety takes leaving the four parts uninjured as the foundation of virtue (the four parts are body, limbs, hair, and skin; the whole body, the four limbs, the hair, and the skin of a person are all born of the parents; not daring to damage them means that among human conduct none is greater than filial piety, hence it is called the foundation of virtue).