“I'll tell you a secret. We live in a mad and inspiring world.”

Source: Alice in Wonderland: Based on the Motion Picture Directed by Tim Burton

Variant: Have I gone mad? I'm afraid so.
You're entirely Bonkers.
But I will tell you a secret,
All the best people are.
Source: Alice in Wonderland

Franny and Zooey (1961), Zooey (1957)
Context: I don't care where an actor acts. It can be in summer stock, it can be over a radio, it can be over television, it can be in a goddam Broadway theatre, complete with the most fashionable, most well-fed, most sunburned-looking audience you can imagine. But I'll tell you a terrible secret — Are you listening to me? There isn't anyone out there who isn't Seymour's Fat Lady. That includes your Professor Tupper, buddy. And all his goddam cousins by the dozens. There isn't anyone anywhere that isn't Seymour's Fat Lady. Don't you know that? Don't you know that goddam secret yet? And don't you know — listen to me, now — don't you know who that Fat Lady really is?... Ah, buddy. Ah, buddy. It's Christ Himself. Christ Himself, buddy.

Source: Napalm & Silly Putty

As quoted in her obituary in The New York Times (14 December 1961) http://www.nytimes.com/learning/general/onthisday/bday/0907.html

Comedians in Cars Getting Coffee (2012 — Present), Season 3 (2014)

Source: A New Earth: Awakening to Your Life's Purpose

Jack Ziegler, Ch. 44, Stormy Weather, III
The Emperor of Ocean Park (2002)