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Man cannot survive except by gaining knowledge, and reason is his only means to gain it. Reason is the faculty that perceives, identifies and integrates the material provided by his senses. The task of his senses is to give him the evidence of existence, but the task of identifying it belongs to his reason, his senses tell him only that something is, but what it is must be learned by his mind.

Man cannot survive except by gaining knowledge, and reason is his only means to gain it. Reason is the faculty that perceives, identifies and integrates the material provided by his senses. The task of his senses is to give him the evidence of existence, but the task of identifying it belongs to his reason, his senses tell him only that something is, but what it is must be learned by his mind.

Approximate historical placement: c. 1943 AD · modern

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Author or tradition
Ayn Rand
Attribution: attributed
Country attributed
Not established
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Historical period
Approximate historical placement: c. 1943 AD · modern
Approximate author-period anchor from life dates 1905 to 1982; Wikidata Q132524, https://www.wikidata.org/wiki/Q132524 (accessed 2026-10-08). Not a quotation composition date.
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Supplied reference C; CSV row 129214; supplied attribution, independently unverified

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