master spirit

English

Noun

master spirit (plural master spirits)

1. The leading entity; the most important person, the controlling figure.
   • 2006, Clive James, North Face of Soho, Picador, published 2007, page 166:

     The editor could have been William Davis, a man with the same Teutonic origins as Werner von Braun, although not as funny. Either way, Coren was the master spirit.