"Don't judge a Book by it's Cover."

Well,
isn't that what the Cover is for?
Isn't the Cover supposed to reflect
the things on the pages within?

Sometimes a Cover is deliberate.
Sometimes it is ascetic.
Sometimes it is gaudy.
Sometimes it is natural.
Sometimes it is artificial.
Sometimes it is physical.
Sometimes it is accurate.
Sometimes it is arbitrary.
Sometimes it is misleading.
Sometimes it is informative.
Sometimes it is psychological.
Other times it can be rather ironic.

So,
I guess,
The Cover does not necessarily reflect
the pages within
except perhaps in a Context defined by
the pages within.

But,
when it comes to People,
in my experience, it doth indeed seem
you can judge many a Book by the Cover
(though you can't be too surprised when you're wrong),
for most People seem not so clever
as to disguise their Cover
when perhaps they really ought to:

Although it's quite true Honesty is a Virtue, a Leopard still will ne'er change it's spots.

Tread lightly.