But what's your ultimate goal, you'll say. That goal will become clearer, will take shape slowly and surely, as the croquis becomes a sketch and the sketch a painting, as one works more seriously, as one digs deeper into the originally vague idea, the first fugitive, passing thought, unless it becomes firm.
Saint-Rémy-de-Provence - Auvers-sur-Oise, 1889-1890, [772-902]: (ed. 2009)