exceptional intellectual or creative power or other natural ability.
she was a teacher of genius
a person who is exceptionally intelligent or creative, either generally or in some particular respect.
one of the great musical geniuses of the 20th century
(in some mythologies) a guardian spirit associated with a person, place, or institution.
The niches perhaps also recall Roman lararia, and the snakes the protective genii associated with such household shrines.
the prevalent character or spirit of something such as a nation or age.
Boucher's paintings did not suit the austere genius of neoclassicism