Portraits of artists

If a photographer looks at the shadows to grab the light, what does a writer look at to understand writing?

By analogy to images, I thought that light, visible, were words and shadows, invisible, were spaces between them. […]
I thought I’d like to work on man, not on the artist. I would show their little or big weakness, their dull habits, their mania and obsessions, their taste, their gestures, their infections and expressions, and eventually the way they sit, laugh and gesticulate.

M. T., Les Artistes sont des anges, 2016