15. Fromentin had described
Rembrandt’s inimitable spirit in similar terms in
Les maîtres d’autrefois: ‘He was a
spiritualist through and through; in a word: an
ideologist, I mean a soul whose world is that of ideas and language is that of ideas. Therein lies the key to the mystery’ (C’était un pur
spiritualiste, disons-le d’un seul mot: un
idéologue, je veux dire un esprit dont le domaine est celui des idées et la langue celle des idées. La clef du mystère est là) (see Fromentin 1902, chapter 16, p. 413). Van Gogh was familiar with this book:
see letter 450.