"In science, the important thing is to modify and change one's ideas as science advances"
About this Quote
Spencer writes from a 19th-century moment when “science” was hardening into an institution: professional societies, specialized journals, and public debates over evolution and social order. As a philosopher closely associated with evolutionary thinking, he watched ideas about nature, society, and progress collide with fresh data and sharper methods. The quote reads like a preemptive defense against dogma wearing a lab coat - and a critique of philosophers (including, potentially, himself) tempted to build grand systems that reality refuses to honor.
The subtext is ethical as much as epistemic. “Modify and change” frames intellectual life as ongoing maintenance, not a one-time conversion. It’s also a rebuke to the politics of certainty: if science advances by revision, then clinging to fixed doctrines isn’t strength; it’s malpractice. Spencer’s sentence works because it turns a methodological point into a character test. The future belongs to people who can update.
Quote Details
| Topic | Science |
|---|---|
| Source | Help us find the source |
| Cite |
Citation Formats
APA Style (7th ed.)
Spencer, Herbert. (2026, February 20). In science, the important thing is to modify and change one's ideas as science advances. FixQuotes. https://fixquotes.com/quotes/in-science-the-important-thing-is-to-modify-and-22837/
Chicago Style
Spencer, Herbert. "In science, the important thing is to modify and change one's ideas as science advances." FixQuotes. February 20, 2026. https://fixquotes.com/quotes/in-science-the-important-thing-is-to-modify-and-22837/.
MLA Style (9th ed.)
"In science, the important thing is to modify and change one's ideas as science advances." FixQuotes, 20 Feb. 2026, https://fixquotes.com/quotes/in-science-the-important-thing-is-to-modify-and-22837/. Accessed 20 Feb. 2026.




