Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. These men did not wholly break with their past. They preserved many of their fathers' ceremonies; nay, they added many more, and developed a most complicated system of sacrificial ritualism. But there were many of them who saw through the shapes of the world and the sacrifices that controlled its weal a vision of the Infinite; and thus amidst the Brah manas, the lore of ritual, grew up the pantheism of the Upanishads.