Perspicacity

Perspicacity (also called perspicaciousness) is a penetrating discernment (from the Latin perspicācitās, meaning throughsightedness, discrimination)—a clarity of vision or intellect which provides a deep understanding and insight.

It takes the concept of wisdom deeper in the sense that it denotes a keenness of sense and intelligence applied to insight. It has been described as a deeper level of internalization.

Another definition refers to it as the "ability to recognize subtle differences between similar objects or ideas".

The above is what Wikipedia told me after I head this word in use in an audiobook today. 

It seems it is also what Rene Magritte named one of his paintings (I’ve seen it, but didn’t know the title.