On Oliver Sacks: his writing process, how he used notebooks, and his views on creativity. Via Field Notes.

Where making is driven by association and memory, birthing “needs ‘incubation’” and is marked by intuition. But before we hasten to assume that he valued the latter type of creative work more highly than the former, he lists Darwin as an example of a writer who makes and Rilke as one who births, which strongly suggests that he saw the two not as a hierarchy but as distinct, complementary forms of creative work — Darwin was, after all, one of Dr. Sacks’s great heroes.

Source: Inside Oliver Sacks’s Creative Process: The Beloved Writer’s Never-Before-Seen Manuscripts, Brainstorm Sheets, and Notes on Writing, Creativity, and the Brain