Noun
vital spark (plural vital sparks)
vital force (or the application of such a force)
Vital spark of heav'nly flame Quit, oh quit, this mortal frame Trembling, hoping, ling'ring, flying, Oh the pain, the bliss of dying. Alexander Pope
If that vital spark that we find in a grain of wheat can pass unchanged through countless deaths and resurrections, will the spirit of man be unable to pass from this body to another? William Jennings Bryan
Vital spark of heav'nly flame! Quit, oh quit, this mortal frame. Alexander Pope