What I know is, that tomorrow, at dawn, I leave this place forever.
— from The Adventures of Pinocchio by Carlo Collodi

“It was easier to know it than to explain why I knew it.
— from A Study in Scarlet by Arthur Conan Doyle

The maritime colony of Hippo, 26 about two hundred miles westward of Carthage, had formerly acquired the distinguishing epithet of Regius, from the residence of Numidian kings; and some remains of trade and populousness still adhere to the modern city, which is known in Europe by the corrupted name of Bona.
— from The History of the Decline and Fall of the Roman Empire Table of Contents with links in the HTML file to the two Project Gutenberg editions (12 volumes) by Edward Gibbon

I speak not this in estimation, As what I think might be, but what I know Is ruminated, plotted, and set down, And only stays but to behold the face Of that occasion that shall bring it on.
— from The Complete Works of William Shakespeare by William Shakespeare

I. Nay, gracious Teacher, deny me not what I know it is in thy power to perform.
— from Flatland: A Romance of Many Dimensions (Illustrated) by Edwin Abbott Abbott

34 Now I tell what I knew in Texas in my early youth, (I tell not the fall of Alamo, Not one escaped to tell the fall of Alamo, The hundred and fifty are dumb yet at Alamo,) 'Tis the tale of the murder in cold blood of four hundred and twelve young men.
— from Leaves of Grass by Walt Whitman

He who in knowledge is exalted high, Framing [304] all Heavens gave such as should them guide, That so each part might shine to all; whereby [Pg 51] Is equal light diffused on every side: And likewise to one guide and governor, Of worldly splendours did control confide, That she in turns should different peoples dower 79 With this vain good; from blood should make it pass To blood, in spite of human wit.
— from The Divine Comedy of Dante Alighieri: The Inferno by Dante Alighieri

Hence the individual at least obscurely takes account of the fact that above his private ideas, there is a world of absolute ideas according to which he must shape his own; he catches a glimpse of a whole intellectual kingdom in which he participates, but which is greater than he.
— from The Elementary Forms of the Religious Life by Émile Durkheim

'Dat's all right,' I says, 'but I know what I knows,' I says, 'an' it 'ill come out later.
— from Maggie: A Girl of the Streets by Stephen Crane

What I know is, that, like a fool, a greater fool than he of whom I spoke just now, I mistook for this peasant girl a young bandit of fifteen or sixteen, with a beardless chin and slim waist, and who, just as I was about to imprint a chaste salute on his lips, placed a pistol to my head, and, aided by seven or eight others, led, or rather dragged me, to the Catacombs of St. Sebastian, where I found a highly educated brigand chief perusing Cæsar’s Commentaries , and who deigned to leave off reading to inform me,
— from The Count of Monte Cristo, Illustrated by Alexandre Dumas

“Well I know it,” replied the other.
— from Sea Plunder by H. De Vere (Henry De Vere) Stacpoole

‘Well, I know I shall never turn indifferently away again when I hear, “We are starving.”
— from Heartsease; Or, The Brother's Wife by Charlotte M. (Charlotte Mary) Yonge

I declare to thee, that, were I in the dawn of youth, I would keep my faith unto Pryderi, and unto thee also will I keep it.
— from The Age of Chivalry by Thomas Bulfinch

The last straw, however, breaks the camel’s back, and this last drink reduced Mr Villiers to that mixed state which is known in colonial phrase as half-cocked.
— from Madame Midas by Fergus Hume

Nothing, however trivial, escapes his search, and his memory is so absolute, so precise in details, that were it known in New York that such a man existed, the people could not honour him enough."
— from The King in Yellow by Robert W. (Robert William) Chambers

If this change is the result of a general decline of physical and intellectual powers—I am ill, you know, and every day I am losing weight—my position is pitiable; it means that my new ideas are morbid and abnormal; I ought to be ashamed of them and think them of no consequence....” “Illness has nothing to do with it,” Katya interrupts me; “it’s simply that your eyes are opened, that’s all.
— from Project Gutenberg Compilation of 233 Short Stories of Chekhov by Anton Pavlovich Chekhov

Here was I a professional card-manipulator, a man who knew, or at all events thought he knew, every trick on the board; and here was a man whom I knew in my mind to be a card-sharper, and yet I could not detect his method of swindling.
— from Twenty Years of Spoof and Bluff by Carlton

“Oh, yes; in that sort of a way, I know it would be naughty not to care for it,” said Norna, looking a little ashamed.
— from An Enchanted Garden: Fairy Stories by Mrs. Molesworth

That's why I know it don't do to press Dawn over far; she must have the same fight in her, an' if drove in a corner there'd be no doing anythink with her.
— from Some Everyday Folk and Dawn by Miles Franklin

For I can’t tell what I know; it would be a lie to tell it, and you said yourself, Nell, that no Maybright told lies.”
— from Polly: A New-Fashioned Girl by L. T. Meade