Original sentence: Reinach that his punishment is based on a picture in which Sisyphus was represented rolling a huge stone  Acrocorinthus, symbolic of the labour and skill involved in the building of the Sisypheum.Welcker suggested that he symbolises the vain struggle of man in the pursuit of knowledge, and S
Edited sentence: Friedrich Welcker suggested that he symbolises the vain struggle of man in the pursuit of knowledge, and Salomon Reinach that his punishment is based on a picture in which Sisyphus was represented rolling a huge stone  Acrocorinthus, symbolic of the labour and skill involved in the building of the Sisypheum