This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...tory identification” — and any new concept man forms must be integrated without contradiction into the hierarchical structure of his knowledge. To introduce into one ’s consciousness any i
dea that cannot be so integrated, an idea not derived from reality, not validated by a process of reason, not subject to rational examination or judgment — and worse : an idea that clashes wit
h the rest of one’s concepts and understanding of reality — is to sabotage the integrative function of consciousness, to undercut the rest of one’s convictions and kill one’s capacity to...
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