“Brains are soft. Helmets are hard. Use both” (bicycle saying)

It’s now the law that a bicycle rider needs a helmet. Before the law, this saying was promoted in British Columbia:
 
“Brains are soft. Helmets are hard. Use both.”
 
The saying has been cited in print since at least 1996.
 
   
Harvard Square Bicycles
Brains are soft.
Helmets are hard.
USE BOTH!
   
Valleycliffe Elementary School (Squamish, British Columbia)
School Safety
(...)
Parents and students are reminded that the law requires that all bicycle riders wear approved helmets when riding on roadways. The staff of Valleycliffe Elementary feels that this should apply to scooters and skateboards as well.
 
“BRAINS ARE SOFT. HELMETS ARE HARD. USE BOTH”
 
Terrace, British Columbia
28 August 1996, The Terrace Standard, pg. A11, col. 5 ad:
HEADS UP
BICYCLE HELMETS WILL BE MANDATORY IN BRITISH COLUMBIA SEPTEMBER 3RD.
(...)
BRAINS ARE SOFT. HELMETS ARE HARD.
USE BOTH.
British Columbia Ministry of Transportation and Highways
 
North Shore Mountain Biking Forums
bunny
02-02-2007, 06:42 PM
(...)
Brains are soft, helmets are hard…use both!
   
MedHelp
By hbananas Blank | Oct 31, 2008
(...)
We’re probably getting bikes, too.
 
Side note—cool sign on the window at the MS specialist’s office:
 
“Brains are soft.  Helmets are hard.  Use both.”
 
Twitter
Grace Olson
‏@GraceElizabethO
Friendly reminder from my neurologist: “Brains are soft, helmets are hard. Use both”. Soooo…is that all the time then? #notabadidea
3:21 PM - 20 Feb 2012