Hi, everyone. I'm a new guy so I probably don't really know about the rules here. Hope you wont mind. 
I saw a sentence in 'The curious incident of the dog in the night-time' which says,
"You seek out the traditional, the natural and the cosmopolitan."
And I'm wondering if an adjective can be followed by the word "the" and then they group as a noun. Like 'the poor' or 'the rich'.
If there is any grammatical problems throughout my words, please point out. I'm always willing to learn. Thank you.
I saw a sentence in 'The curious incident of the dog in the night-time' which says,
"You seek out the traditional, the natural and the cosmopolitan."
And I'm wondering if an adjective can be followed by the word "the" and then they group as a noun. Like 'the poor' or 'the rich'.
If there is any grammatical problems throughout my words, please point out. I'm always willing to learn. Thank you.