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I know of no significant advance in science that did not require major inputs from both cerebral hemispheres. This is not true for art, where apparently there are no experiments by which capable, dedicated and unbiased observers can determine to their mutual satisfaction which works are great.

I know of no significant advance in science that did not require major inputs from both cerebral hemispheres. This is not true for art, where apparently there are no experiments by which capable, dedicated and unbiased observers can determine to their mutual satisfaction which works are great.

Approximate author period: c. 1965 AD · modern

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Attribution & collection notes
Author or tradition
Carl Sagan
Attribution: attributed
Country attributed
Not established
A country attribution does not establish the earliest origin.
Historical period
Approximate author period: c. 1965 AD · modern
Approximate author-period anchor from life dates 1934 to 1996; Wikidata Q410, https://www.wikidata.org/wiki/Q410 (accessed 2026-10-08). Not a quotation composition date.
An author lifetime, approximate period or collection date is not necessarily the date when these words were first written or spoken.
Recorded source
Contributor-provided quotation collection

Supplied reference C; CSV row 62595; supplied attribution, independently unverified

A collection's publication date can be later than the words it records.