I don't understand this sentence

btw0   Wed Mar 11, 2009 10:59 am GMT
http://ngm.typepad.com/editors_note/2009/02/march-2009.html

"All the more reason to be mindful of the choices we make."

It appeared as the first sentence of the second paragraph in Editor's Note of National Geographic March 2009 edition. I don't understand the structure of this sentence, and where is the predicate of this sentence?
Guest   Wed Mar 11, 2009 2:05 pm GMT
It is a sentence fragment. The "full" sentence would be "That is all the more reason to be mindful of the choices we make." So, the whole thing is the predicate.
Robin Michael   Wed Mar 11, 2009 10:53 pm GMT
Predicate (grammar) - Wikipedia, the free encyclopedia

In traditional grammar, a predicate is one of the two main parts of a sentence (the other being the subject, which the predicate modifies). ...

en.wikipedia.org/wiki/Predicate_(grammar) - 39k - Cached - Similar pages

The subject divides clauses into two constituents, the noun phrase (NP) and the verb phrase (VP),

"All the more reason to be mindful of the choices we make."

We should be all the more mindful of the choices we make

"We should be mindful" "of the choices we make"