"The complaint is not based on some esoteric concept we came up with this morning," Ms. Arnold said.

Gnosis most often refers to a mystical or esoteric concept.

The esoteric concept on which this is based is controversial.

We do not even need to be able to measure the somewhat esoteric concept of surplus, since it is always a one-way reduction.

It does not require memorization of an esoteric concept or the mastery of a specialty.

But love was more than just an esoteric concept.

He is noted for his ability to transform esoteric concepts and obscure academic texts into lively educational and fun learning experiences.

Another goal of the book is to explain the supposedly esoteric concept of ki in Western terms.

Its collection on Freemasonry and other esoteric concepts made a strong impression on him.