What are the main themes in Roald Dahls stories - Charlie and the Chocolate...

[purpledivaqueen]

...Factory and The Witches? I have to write a report about the main issues/themes in these two stories.
I know that there is the theme of children getting mistreated by adults

Help would be greatly appreciated

 

[Indigo]

There's also a common theme of childhood purity/innocence overcoming various corruptions in life.