Theory:

The lesson "I Want Something in a Cage" is written by L E Greeve. The lesson narrates the events that happened in Mr Purcell's pet shop after the arrival of a strange man. The central theme of the lesson is an urge for freedom.
 
The major characters of the lesson are,
  • Mr Purcell
  • Strange man
The moral of the lesson is that we should not imprison living creatures like animals and birds. Pet animals, like humans, require freedom. They need love, care, and a space to survive in this world. Instead of being held in cages, they should be released to live their own lives.