William James was interested in mindfulness and attention:
“The faculty of voluntarily bringing back a wandering attention, over and over again, is the very root of judgment, character, and will. No one is compos sui [master of himself] if he have it not. An education which should improve this faculty would be the education par excellence.”
William James, Psychology: Briefer Course, p. 424 (Harper Torchbooks, 1961)
