The Bell On the Cat

Several centuries ago, the mice called a meeting to consider their sad situation.
All the speakers agreed on the fact that it was all the fault of the cats, and they debated ways in which they could avoid being hunted by them.
Finally, a solution was proposed and every one approved. It was decided to attach a bell to every cat so that the mice would hear them coming. 
This law is still in force, but unfortunately no mice have come forward to volunteer to put the bells on the cats.

Moral : Easier said than done. 

Words                   Meanings 
mice               plural of mouse
agree             to have the same opinion about some thing
debate           to discuss something, especially formally
avoid             to prevent something from happening
propose         to suggest a plan, an idea, etc.
approve         to think that somebody or something is good
forward         to make courage