William James on Walt Whitman

The below from Wm James's 1902 masterwork THE VARIETIES OF RELIGIOUS EXPERIENCE: A STUDY IN HUMAN NATURE, specifically from one of the two lectures under the rubric "The Religion of Healthy-Mindedness" (notably James did not count himself among the "healthy minded" but considered himself one of the "sick souls," who had to be "twice-born") :
The supreme contemporary example of such an inability