Reddit mentions of A Wrinkle in Time (The Time Quartet)

This isn't a "must read list", but going off your list, I think you would enjoy:

• Patrick Rothfuss's The Name of the Wind
  
• Greg Mortenson's Three cups of tea
  
• Khaled Hosseini's The Kite Runner
  
• Vladimir Nabokov's Lolita
  
• Madeleine L'Engle's A Wrinkle in Time
  
• Richard Adams's Watership Down
  
  If you are looking for books to expand your literary chops on, I think blackstar9000 made a very good list.
  
  For my recommendations on getting out of your element try these:
  
  
• Niccolò Machiavelli's The Prince
  
• Naomi Klien's Shock Doctrine
  
• Brian K. Vaughan & Pia Guerra's Y: The Last Man
  
• Douglas Adams The Hitchhiker's Guide to the Galaxy
  

• Earth Abides by George R. Stewart
  
• Introduction to Electrodynamics by David Griffiths
  
• A Wrinkle in Time by Madeleine L'Engle

I was sure this was going to be A Wrinkle in Time or The Phantom Tollbooth.

But since it wasn't either of those, The Mouse and the Motorcycle was a good alternative. One of my elementary school teachers read that (and other books from the series?) in class when I was a kid, and it was wonderful.

OK time for you to go (re)read A Wrinkle in Time for the best literary approach to this sort of metaphor.

Later in our exploration of New Age Metaphors Mapping to Contemporary Religion we can talk about Jonathan Livingston Seagull.

You are love.