This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...e questions of: why they chose to do it and why he evaluated them as noble and wise.
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Most philosophers took the existence of ethics for granted, as the given, as a historical fact,
and were not concerned with discovering its metaphysical cause or objective validation. Many of them attempted to break the traditional monopoly of mysticism in the field of ethics and, alleged
ly, to define a rational, scientific, nonreligious morality. But their attempts consisted of trying to justify them on social grounds, merely substituting society for God.