I spend a lot of time in a sort of free state when I'm writing in the beginning and sketching.
Customary though it may be to write about that institutionalized pastime as though it existed apart from the general environment, my story does not lend itself to such treatment.
The great thing about using the past is that it gives you the most colossal freedom to invent. The research is necessary, of course, but no one writes a novel to dramatically illustrate what everybody already knows.

