4 ideas
Henri argues that good work comes from the state of being of the person making it, not from mastering technique as a goal in itself. When the maker is fully alive, curious and moved by something, the work carries that state. Technical correctness without that inner condition produces work that is competent and dead.
The subject is not the thing in front of you but what moved you about it. Henri tells students to ask what first struck them, whether the gesture, the light or the character, and to let that impression organize every decision. Details that do not serve the first impression should be subordinated or left out.
Henri urges students to state the whole thing quickly and at once, holding the unity of the first vision, rather than finishing parts one by one. Slow, piecemeal work lets the original feeling fade, and the result is an assembly of separately correct fragments with no life. Speed here serves unity and conviction. It is not haste for its own sake.
Henri holds that academic rules, teachers and even great masters should be studied for what they reveal, then used or discarded according to your own purpose. Imitating an approved manner produces derivative work, and students must learn to judge by their own seeing. The teacher's job is to awaken independence, not to produce followers.