TANSTAAFL

TANSTAAFL - There ain't no such thing as a free lunch.

TANSTAAFL means that a person or a society cannot get something for nothing. Even if something appears to be free, there is always a cost to the person or to society as a whole even though that cost may be hidden or distributed.

All the world's a stage

The show cannot go on with only the major parts of the glamorous stars strutting their stuff. They need supporting actors/actresses, and some extra's and a backstage crew, lighting team, costume design and the fall guys too.

And everyone has a different personality/role to play