Separability of Morality & Religion

"We desire n0thing less than to see that Law whose naked authority is already unsupportable armed with the incalculable claims of the Numinous. Of all the jumps that humanity takes in its religious history this is certainly the most surprising. It is not unnatural that many sections of the human race refused it; non-moral religion, and non-religious morality, existed and still exist. Perhaps only a single people, as a people, took the new step with perfect decision - I mean the Jews: but great individuals in all times and places have taken it also, and only those who take it are safe from the obscenities and barbarities of unmoralised worship or the cold, sad self-righteousness of sheer moralism."

C.S. Lewis, The Problem of Pain p. 20