I'll be more enthusiastic about encouraging thinking outside the box when there's evidence of any thinking going on inside it.

WHAT FOR IS THIS BOX PADDED? IS IT TO BE SAT ON? CAN IT BE THAT IT IS CAT-FLAVOURED?

Think Outside the box? Omit the Box, Think Beyond!

There is a rumour going around that I have found God. I think this is unlikely because I have enough difficulty finding my keys, and there is empirical evidence that they exist.

What's going on in the inside shows on the outside.

The truth may be out there, but lies are inside your head.