My own brain is to me the most unaccountable of machinery --always buzzing, humming, soaring roaring diving, and then buried in mud. And why? What's this passion for?
— Virginia Woolf

On occasions, after drinking a pint of beer at luncheon, there would be a flow into my mind with sudden and unaccountable emotion, sometimes a line or two of verse, sometimes a whole stanza, accompanied, not preceded by a vague notion of the poem which they were destined to form a part of.... I say bubble up because, so far as I could make out, the source of the suggestions thus proffered to the brain was the pit of the stomach.
A.E. Housman unaccountable quote

Perhaps, to the uninformed, it may appear unaccountable that a man should be able to retain in his memory such a variety of learning; but the close alliance with each other, of the different branches of science, will explain the difficulty.
— Marcus V. Pollio

It would be stupid tameness, and unaccountable folly, for whole nations to suffer one unreasonable, ambitious and cruel man, to wanton and riot in their misery.
— Jonathan Mayhew

I came in with Halley's Comet in 1835. It is coming again next year, and I expect to go out with it. It will be the greatest disappointment of my life if I don't go out with Halley's Comet. The Almighty has said, no doubt: 'Now here are these two unaccountable freaks; they came in together, they must go out together.'
— unaccountable quotation by Mark Twain