1.
Evil is nourished and grows by concealment.
Virgil
2.
The art of nature is all in the direction of concealment.
John Burroughs
4.
A disease is farther on the road to being cured when it breaks forth from concealment and manifests its power.
Seneca the Younger
5.
A fault is fostered by concealment.
Virgil
7.
Real bullets are for keeps, and concealment is not necessarily good cover.
Dick Couch
8.
Art is brief. (Not in a temporal sense.) [...] Words are for concealment. Art is concealment.
Iris Murdoch