“The idea of revelation is the idea of special knowledge of God, or of religious truth, possessed by some people and transmitted by them to others. In some form or other the idea is reasonable. In all other matters people differ in their degree of skill or insight. Why not in religion?”

Source: The Apophenion (2008), p. 38-39
Context: An old joke puts its thus, "when a man speaks to a god its prayer, when a god speaks to a man its schizophrenia"... Many people hear voices without suffering any of the debilitating and dysfunctional effects associated with schizophrenia, some treat these as sources of inspiration of develop religious ideas around them, others become mediums or occultists.

11 May 1943
My Day (1935–1962)

Source: God's Revelation to the Human Heart

Revelation, when applied to religion, means something communicated immediately from God to man.
No one will deny or dispute the power of the Almighty to make such a communication, if he pleases. But admitting, for the sake of a case, that something has been revealed to a certain person, and not revealed to any other person, it is revelation to that person only. When he tells it to a second person, a second to a third, a third to a fourth, and so on, it ceases to be a revelation to all those persons. It is revelation to the first person only, and hearsay to every other, and consequently they are not obliged to believe it.
When Moses told the children of Israel that he received the two tables of the commandments from the hands of God, they were not obliged to believe him, because they had no other authority for it than his telling them so; and I have no other authority for it than some historian telling me so. The commandments carry no internal evidence of divinity with them; they contain some good moral precepts, such as any man qualified to be a lawgiver, or a legislator, could produce himself, without having recourse to supernatural intervention.
When I am told that the Koran was written in Heaven, and brought to Mahomet by an angel, the account comes too near the same kind of hearsay evidence and second-hand authority as the former. I did not see the angel myself, and, therefore, I have a right not to believe it.
When also I am told that a woman called the Virgin Mary, said, or gave out, that she was with child without any cohabitation with a man, and that her betrothed husband, Joseph, said that an angel told him so, I have a right to believe them or not: such a circumstance required a much stronger evidence than their bare word for it; but we have not even this — for neither Joseph nor Mary wrote any such matter themselves; it is only reported by others that they said so — it is hearsay upon hearsay, and I do not choose to rest my belief upon such evidence.
1790s, The Age of Reason, Part I (1794)

"'A Conversation With Lois McMaster Bujold", p. 54
The Vorkosigan Companion (2008)

" Where do you get your ideas? http://www.neilgaiman.com/p/Cool_Stuff/Essays/Essays_By_Neil/Where_do_you_get_your_ideas%3F" (1997)

p. 29 https://books.google.com/books?id=GHkIAAAAIAAJ&pg=PA29
Pioneer Work in Opening the Medical Profession to Women (1895)

Oui interview (1979)
Context: There’s no reason to assume that my idea of what‘s better would really be better. I resent it when other people try to inflict their ideas of betterness on me. I don’t think they know. And I can’t see any authority on the horizon that’s got any answers that seem worthwhile. Most of the things that are suggested are probably detrimental to your mental health.

Source: The French Lieutenant's Woman