From introductory not to a couple essays of R.L.Stevenson.
"Stevenson began his career with the writing of essays, then
issued two charming volumes of humorous and contemplative
travel, “An Inland Voyage” and “Travels with a Donkey in the
Cevennes”; then collected in his “New Arabian Nights” a number
of fanciful short stories he had been publishing in a magazine. In
1883 he first caught the attention of the larger public with
“Treasure Island,” one of the best, and probably the best written,
boys’ story in the language. His most sensational success was
“the Strange Case of Dr. Jekyll and Mr. Hyde”; but a much
higher literary quality appears in such novels as “The Master of
Ballantrae,” “Kidnapped,” and “Catriona,” in which he to some
extent follows the tradition of Scott, with far greater finish of
style, but without Scott’s fine spontaneity and unconsciousness.
He published also three small volumes of verse, some of it of
great charm and delicacy."

Surely a better word than "unconsciousness" could have been used. I suppose
"unselfconsciousness" (closer perhaps to meaning intended, but clumsy) was ,eamt/
Reminds me of an MIT English prof go provoked considerable merriment by telling
a class they should write the way he drove his car - "unconsciously".