His work is said to involve the enigmatic nature of physical reality and human perception.

The enigmatic nature of the increase is most apparent in the Bronx, where there would appear to be strong pressures for a higher murder rate.

The mountain's enigmatic nature is, of course, part of its magnetism.

He is known for his enigmatic nature, and the large burn scar on his cheek.

They also appear to take pride in their enigmatic nature (emphasis added):

Mr. Clontz is a playwright who works hard at maintaining the enigmatic nature of his characters.

Also, her rather enigmatic nature was replaced by a more definite evil persona.

But a century ago, only the first inklings of the electron's enigmatic nature were known, and apparatus was primitive by modern standards.

The species name peculiaris is a reference to the enigmatic nature of the species when first studied.

Indeed, the enigmatic nature of these films, their beauty and brevity (the longest is 17 minutes) invite repeated viewing.