Dense is the opposite of Intelligent. Literature can be used for Intelligent. Literature is related to Academic. Academic is similar to Theoretical. 
Library would make you want to Read. Library is related to Inside. 
Dense <--Antonym--> Intelligent <--UsedFor-- Literature <--RelatedTo--> Academic <--SimilarTo--> Theoretical 
Read <--CausesDesire-- Library <--RelatedTo--> Inside 