Quintessential Quandary

"On this planet, normal equals insane." – Eckhart Tolle

Just a quixotic quote from the pundit, Eckhart Tolle, from his book, A New Earth.

Is that right? I need an adjective which starts with a Q. Let’s try:
Just a quantum quote from the quarrelsome Eckhart Tolle, from his book, A New Earth.
Or maybe:
Just a quirky quote from the quizzical Eckhart Tolle, from his book, A New Earth.

I’ll go with:
Just a quizzical quote from the pundit, Eckhart Tolle, from his quintessential book, A New Earth.
See full article about ET and The New Earth at http://musinglog.blogspot.com

Adjectives starting with Q:
Quantum – a popular term right now, but no one knows what it means except my friend’s son who is studying nuclear physics.
Quarrelsome – argumentative, cantankerous, querulous.
Quintessential – most essential, concentrated, or purest (form of something). Latin.
Quixotic - idealistic, unrealistic, impractical, or romantic. From the fictional character Don Quixote 1605.
Quizzical – bewildered, confused, or odd.