They arose in my mind as 'given' things, and as they came, separately, so too the links grew. An absorbing, though continually interrupted labour (especially, even apart from the necessities of life, since the mind would wing to the other pole and spread itself on the linguistics): yet always I had the sense of recording what was already 'there', somewhere: not of 'inventing'.

The Silmarillion (ed. Houghton Mifflin Harcourt, 2012) - ISBN: 9780547951980