quote · Legacy record
The progressive development of man is vitally dependent on invention. It is the most important product of his creative brain.
The progressive development of man is vitally dependent on invention. It is the most important product of his creative brain.
Approximate author period: c. 1899 AD · industrial
Meaning not yet available
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Begin with source-checked readings and explanations ↗Attribution & collection notes
- Author or tradition
- Nikola Tesla
Attribution: attributed - Country attributed
- Not established
A country attribution does not establish the earliest origin. - Historical period
- Approximate author period: c. 1899 AD · industrial
Approximate author-period evidence for Nikola Tesla: life dates 1856 to 1943. Wikidata Q9036, inspected 2026-10-08. Not a quotation composition date or independent verification of attribution. Source: https://www.wikidata.org/wiki/Q9036 (accessed 2026-10-08).
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 160222; supplied attribution, independently unverified
A collection's publication date can be later than the words it records.