“Inaction is safety in peril.”

Hercules Furens (The Madness of Hercules), lines 325-328; (Megara).
Tragedies

My Inventions (1919)

Source: Stranger in a Strange Land

In 1972 ([Dowie, Mark, Pinto Madness, Mother Jones, September 1977, http://motherjones.com/politics/1977/09/pinto-madness, December 2, 2018]; [Selling Autos by Selling Safety, Paul C., Judge, The New York Times, January 26, 1990, December 2, 2018, https://www.nytimes.com/1990/01/26/business/selling-autos-by-selling-safety.html]).

This was first used by Franklin for the Pennsylvania Assembly in its " Reply to the Governor https://founders.archives.gov/documents/Franklin/01-06-02-0107" (11 Nov. 1755)
This quote was used as a motto on the title page of An Historical Review of the Constitution and Government of Pennsylvania (1759); the book was published by Franklin; its author was Richard Jackson, but Franklin did claim responsibility for some small excerpts http://www.philaprintshop.com/rarephila.html that were used in it.
In 1775 Franklin again used this phrase in his contribution to Massachusets Conference https://founders.archives.gov/documents/Franklin/01-21-02-0269 (Objections to Barclay’s Draft Articles of February 16.) - "They who can give up essential Liberty to obtain a little temporary Safety, deserve neither Liberty nor Safety."
An earlier variant by Franklin in Poor Richard's Almanack (1738): "Sell not virtue to purchase wealth, nor Liberty to purchase power."
Many paraphrased derivatives of this have often become attributed to Franklin:
They that can give up essential liberty to purchase a little temporary safety, deserve neither liberty nor safety.
They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.
Those Who Sacrifice Liberty For Security Deserve Neither.
He who would trade liberty for some temporary security, deserves neither liberty nor security.
He who sacrifices freedom for security deserves neither.
People willing to trade their freedom for temporary security deserve neither and will lose both.
If we restrict liberty to attain security we will lose them both.
Any society that would give up a little liberty to gain a little security will deserve neither and lose both.
He who gives up freedom for safety deserves neither.
Those who would trade in their freedom for their protection deserve neither.
Those who give up their liberty for more security neither deserve liberty nor security.
1750s
Source: https://founders.archives.gov/documents/Franklin/01-06-02-0107#BNFN-01-06-02-0107-fn-0005

"The Fairly Intelligent Fly", The New Yorker (4 February 1939), a tale of a fly who avoided getting caught in an empty spider web, but then disregarding a warning by a bee, settled down among other flies he believed to be "dancing", and "became stuck to the flypaper with all the other flies."; Fables for Our Time & Famous Poems Illustrated (1940); Quote Investigator notes that this statement was referred to as "Thurber’s Law", in 1,001 Logical Laws (1979) https://quoteinvestigator.com/2019/07/21/safety/

Ref: en.wikiquote.org - James Thurber / Quotes / Fables for Our Time and Further Fables for Our Time
From Fables for Our Time and Further Fables for Our Time

Source: The Angel Experiment

Source: Lamb: The Gospel According to Biff, Christ's Childhood Pal

Source: Shadowfever