Wear it out, use it up!!!!
Waste not want not.
When I was growing up in the 50's and 60's these were phrases I heard quite often. I grew up in a household consisting of 3 adults (we lived with our Grandmother in her home, my Dad's childhood home).and 4 children. We grew our own vegetables and had several fruit trees and grapevines. We also raised chickens and as a result had fresh eggs. We were taught at a very young age not to waste anything and to use what we had until it was no longer of any use.
As I was thinking about the rising cost of fuel and food ( milk and gas are about the same in price) these sayings came to mind.
We need to use up what we have and not to waste anything. Then the second part of this lesson I was taught was to share what we had with others. We had a family who lived across the street from us. They were not as fortunate as we were. Each night when we finished our meal, our Grandmother and Mother will spoon up the rest of the food from the pot and place it in their good serving bowl and have us take it to our neighbors.
These lessons I learned in my childhood have stayed with me throughout my adult life. I still practice them today.