Paint fast to catch the life of the thing
Used very short poses, five to thirty minutes, to force a rapid, intuitive response and seize the essential gesture of the subject.
Why it matters · Speed keeps you out of the non-essential detail. Henri held that the artist's first, high-energy response carried the most truth and life. "Thirty minutes of high-pitch mentality and spirit is worth more than a whole week below par."
Robert Henri, The Art Spirit, 1923
Block the big masses as a "poster"
Started a portrait by mapping the large flat shapes of hair, face, and clothing, pre-mixing one colour for each, and laying them in as simple flat areas.
Why it matters · The poster method sets the whole painting's colour harmony and design at the outset. It makes you see the big relationships of colour and value before any modelling or detail, so the picture stands on a strong foundation.
Robert Henri, The Art Spirit (the "poster" method), 1923
Paint from memory to sharpen the seeing
Set the model in one room and the students painting in another, forcing them to retain the essential information rather than copy passively.
Why it matters · Memory work trains the artist to see with intention and filter for what matters most to their own vision. It builds the power to make a picture rather than transcribe a subject.
The memory-drawing exercise documented in Henri's New York classes
Hunt subjects in the grit of the city
Sent students out as "sketch hunters" to find meaning in urban scenes, working people, and the gruesome and wretched corners of life.
Why it matters · This is his doctrine of "art for life's sake." He broke from the academic habit of idealised subjects, arguing art should meet modern experience head on, which is where the Ashcan School came from.
Henri's "sketch hunting" doctrine (The Art Spirit; his New York teaching)
Find the spirit, not just the likeness
Taught that the aim was to express the artist's response and the subject's inner character, not a technically perfect but lifeless copy.
Why it matters · This freed students like Edward Hopper from academic dogma. The first condition of a portrait was "something you want to say definitely about the subject." Technique was a means to that, not the point.
Robert Henri, The Art Spirit, 1923