Noun
The state of being perspicacious; acuteness of sight or of intelligence; acute discernment.
Source: Webster's dictionaryEver since I heard you is got a million dollars I notice you is fraught with perspicacity. Walt Kelly
Philosophies can be judged, at most, on the grounds of the perspicacity with which they decide that something is worthy of becoming the starting point for a global explanatory hypothesis. Umberto Eco