“Possibilities that fail to get realized are, for determinism, pure illusions: they never were possibilities at all. There is nothing inchoate, it says, about this universe of ours, all that was or is or shall be actual having been from eternity virtually there. The cloud of alternatives our minds escort this mass of actuality withal is a cloud of sheer deceptions, to which 'impossibilities' is the only name that rightfully belongs.”
The Dilemma of Determinism in "The Will to Believe" p. 151 http://books.google.com/books?id=Moqh7ktHaJEC&pg=PA151
1890s, The Will to Believe and Other Essays in Popular Philosophy (1897)
Help us to complete the source, original and additional information
William James 246
American philosopher, psychologist, and pragmatist 1842–1910Related quotes

“Haze all clouding up in my mind in the daze of the why it could've never been.”

Thoughts and Glimpses (1916-17)
Thoughts and Glimpses (1916-17)

Source: The Sex Sphere (1983), p. 171

guilt, not simply before some external tribunal, be it even God's, but guilt before the more inexorable bar of our own soul.”
Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), The Harmony of Determinism and Freedom, p.370-1