If you go along with it any considerable distance,
it’ll begin to give you an idea what size mind you have.
What it’ll fit and, maybe, what it won’t.
After a while, you’ll have an idea
what kind of thoughts
your particular size mind should be wearing.
For one thing,
it may save you an extraordinary amount of time
trying on ideas that don’t suit you,
aren’t becoming to you.
You’ll begin to know your true measurements
and dress your mind accordingly.
– Mr. Antolini (Catcher in the Rye, Ch. 24)