I think that zinc white has a property of scaling and cracking.
If you could say it in words there would be no reason to paint.
The only real influence I've ever had was myself.
If the picture needs varnishing later, I allow a restorer to do that, if there's any restoring necessary.
If the technical innovations of the Impressionists led merely to a more accurate representation of nature, it was perhaps of not much value in enlarging their powers of expression.
No amount of skillful invention can replace the essential element of imagination.