"Once a disease has entered the body, all parts which are healthy must fight it: not one alone, but all. Because a disease might mean their common death. Nature knows this; and Nature attacks the disease with whatever help she can muster"
About this Quote
The subtext is a quiet attack on the era's habit of treating disease as a localized glitch to be cut out, bled out, or prayed out. Paracelsus insists the body is an integrated system with a kind of strategic intelligence. When he says "Nature knows this", he gives the organism agency, almost a commander marshalling resources. That personification does rhetorical work: it makes healing feel less like a doctor's intervention imposed on a passive patient and more like an alliance with forces already at work. The physician's job becomes less the sovereign and more the tactician.
Context matters because Paracelsus lived before germ theory, before immune cells had names, when "disease" was still tangled with cosmology and moral panic. Yet the logic lands with striking modernity: distributed defense, shared stakes, coordinated response. It's also a warning disguised as biology. A body that fails to mobilize all its "healthy parts" becomes vulnerable to collapse; a society that fragments under threat courts the same outcome. He smuggles an ethic of solidarity through the language of physiology, making unity feel not virtuous but necessary.
Quote Details
| Topic | Health |
|---|---|
| Source | Help us find the source |
| Cite |
Citation Formats
APA Style (7th ed.)
Paracelsus. (2026, January 15). Once a disease has entered the body, all parts which are healthy must fight it: not one alone, but all. Because a disease might mean their common death. Nature knows this; and Nature attacks the disease with whatever help she can muster. FixQuotes. https://fixquotes.com/quotes/once-a-disease-has-entered-the-body-all-parts-143407/
Chicago Style
Paracelsus. "Once a disease has entered the body, all parts which are healthy must fight it: not one alone, but all. Because a disease might mean their common death. Nature knows this; and Nature attacks the disease with whatever help she can muster." FixQuotes. January 15, 2026. https://fixquotes.com/quotes/once-a-disease-has-entered-the-body-all-parts-143407/.
MLA Style (9th ed.)
"Once a disease has entered the body, all parts which are healthy must fight it: not one alone, but all. Because a disease might mean their common death. Nature knows this; and Nature attacks the disease with whatever help she can muster." FixQuotes, 15 Jan. 2026, https://fixquotes.com/quotes/once-a-disease-has-entered-the-body-all-parts-143407/. Accessed 21 Feb. 2026.






