The word "perspicacity" means having a keen or sharp intellect, especially when it comes to understanding things quickly and accurately. Full definition
So the real question is, «Do we have confidence in the wisdom and perspicacity of the Chinese and U.S. administrations?» (edgeandodds.com)
Rohmer's films may seem talky and arid by the standards of some, but they're fascinating, unfussy and naturalistic works that have great perspicacity about human nature, interpersonal communication and relationships both amorous and fraternal, and they superbly grouped and presented here. (shareddarkness.com)
Aristotle explains the distinction with his usual perspicacity: (blog.politics.ox.ac.uk)