“If you really come down to any large story that interests people – holds the attention for a considerable time … human stories are practically always about one thing, aren't they? Death. The inevitability of death.”

Strength to Love, p. 73
1960s, Strength to Love (1963)

Source: Ceremony

Source: A Hat Full of Sky

Escape, and Other Essays (1915)

Introduction to an Omnibus edition of his work, as quoted in Somewhere in Time (1998), p. 318 - 319

As quoted in "Stray Questions for: David Eagleman" by Blake Wilson in The New York Times (10 July 2009) http://artsbeat.blogs.nytimes.com/2009/07/10/stray-questions-for-david-eagleman/
Context: Our ignorance of the cosmos is too vast to commit to atheism, and yet we know too much to commit to a particular religion. A third position, agnosticism, is often an uninteresting stance in which a person simply questions whether his traditional religious story (say, a man with a beard on a cloud) is true or not true. But with Possibilianism I’m hoping to define a new position — one that emphasizes the exploration of new, unconsidered possibilities. Possibilianism is comfortable holding multiple ideas in mind; it is not interested in committing to any particular story.

Poetry as Expression - The Writer April 1962
Prose