“The old horse in the stable still yearns to run” –means that those who are older still have things they would like to accomplish.
“A spark can start a fire that burns the entire prairie” – means that a small problem can snowball into a huge problem that can cause major damage.
“Give a man a fish and you feed him for a day; teach a man to fish and you feed him for a lifetime” – means that teaching people is better in the long run because it gives them the skills to provide for themselves as opposed to you doing things for them.
Remember the tag,he/she is only in Junior High School meaning he/she doesn't know about deep proverbs and he/she only needs simple and easy to understand proverbs.
Ohh .. I'm sorry . I didn't notice that . Sorry !
It's okay
1.You only live once
2.Blood is thicker than water
 Honesty is the best policy
Never judge by appearances
Absence makes the heart grow fonder
These are famous proverbs used generally.Thanks for asking!