I was watching a speech on TV by someone who said the sentence "..and our country faces threats from within [long pause] and without."
I thought this was wrong and jokingly posted about on social media, but a friend told me that it is in fact 'perfectly correct' English usage and often used in rhetoric.
Is this true? Is it 'perfectly correct' in this context? I've never seen 'within and without' used myself but upon googling the phrase it does seem to be used in old English texts, such as this quote in The Great Gatsby:
"“I was within and without, simultaneously enchanted and repelled by the inexhaustible variety of life.”"