What's Digory's fellow adventurer friend's name?

What's Digory's uncle's name?

When Polly and Digory were in the Jadis' world, what made the White Which turn into life from her stone state? How did Digory treat Polly?

What's the Cabby's horse's name?

How can one describe Uncle Andrew's personality?

What's the color of the ring that took Digory and Polly to enter any of the pools as means of transporting them to another world.

Who could understand the sound and the singing?

What's the name of the cold and dying world to which the children are transported?

This character sees the accumulation of knowledge (magic in his case) as a means to some other end: power, wealth, or fame. Knowledge is something to be used, rather than something gained for its own sake. This is a fundamentally violent approach. Who is it?

This character is not actually foolish, although we may laugh at some stupid choices and can really see it's pure evil. Who is it?

Despite being short and weak, this character suffers from a high degree of arrogance. Who is it?