Part 2, Ch. 5
Harold Stearns was a once-well-known New York writer and intellectual whom Hemingway knew when they were both living in Paris.
The Torrents of Spring (1926)

“Scott took LITERATURE so solemnly. He never understood that it was just writing as well as you can and finishing what you start.”

Ernest Hemingway

Letter to Arthur Mizener (12 May 1950); published in Ernest Hemingway: Selected Letters 1917–1961 (1981) edited by Carlos Baker

“Bullfighting is the only art in which the artist is in danger of death and in which the degree of brilliance in the performance is left to the fighter's honor.”

Ernest Hemingway book Death in the Afternoon

Source: Death in the Afternoon (1932), Ch. 9

“I didn't marry her family.'
'Of course not. But you always do. Dead or alive.”

Ernest Hemingway book The Garden of Eden

David and Colonel John Boyle in Ch. 7
The Garden of Eden (1986)

“A bullfighter can never see the work of art that he is making. He has no chance to correct it as a painter or writer has. He cannot hear it as a musician can. He can only feel it and hear the crowd's reaction to it. When he feels it and knows that it is great it takes hold of him so that nothing else in the world matters. All the time that he is making his work of art he knows that he must keep within the limits of his skill and his knowledge of the animal. Those matadors are called cold who visibly show that they are thinking of this. Antonio was not cold and the public belonged to him now. He looked up at them and let them know, modestly but not humbly, that he knew it and as he circled the ring with the ear in his hand he looked at the different segments of Bilbao, a city that he loved, as they stood up as he passed and was happy that he owned them.”

Ernest Hemingway

Source: The Dangerous Summer (1985), Ch. 13

“Some people show evil as a great racehorse shows breeding. They have the dignity of a hard chancre.”

Ernest Hemingway book A Moveable Feast

Source: A Moveable Feast (1964), Ch. 12

“But don't try to find an untroublesome woman. She will dull out on you. What makes a woman good in bed makes it impossible for her to live alone.”

Ernest Hemingway

Pt. 2, Ch. 7
Papa Hemingway (1966)

“Cowardice, as distinguished from panic, is almost always simply a lack of ability to suspend the functioning of the imagination.”

Ernest Hemingway

Introduction to Men at War (1942)

“Only one marriage I regret. I remember after I got that marriage license I went across from the license bureau to a bar for a drink. The bartender said, "What will you have, sir?"”

Ernest Hemingway

And I said, "A glass of hemlock."
Pt. 2, Ch. 5
Papa Hemingway (1966)

“They started two hours before daylight, and at first, it was not necessary to break the ice across the canal as other boats had gone on ahead. In each boat, in the darkness, so you could not see, but only hear him, the poler stood in the stern, with his long oar. The shooter sat on a shooting stool fastened to the top of a box that contained his lunch and shells, and the shooter's two, or more, guns were propped against the load of wooden decoys. Somewhere, in each boat, there was a sack with one or two live mallard hens, or a hen and a drake, and in each boat there was a dog who shifted and shivered uneasily at the sound of the wings of the ducks that passed overhead in the darkness.”

Ernest Hemingway book Across the River and into the Trees

Source: Across the River and into the Trees (1950), Ch. 1 (the opening paragraph of the novel)

“We have fought this war and won it. Now let us not be sanctimonious; nor hypocritical; nor vengeful; nor stupid. Let us make our enemies incapable of ever making war again, let us re-educate them, let us learn to live in peace and justice with all countries and all peoples in this world. To do this we must educate and re-educate. But first we must educate ourselves.”

Ernest Hemingway

Introduction to Treasury of the Free World (1946)

“It’s his sense of self-preservation.’ ‘The great Italian sense.’ ‘The greatest Italian sense.”

Ernest Hemingway book Che Ti Dice La Patria?

"Che ti dice la Patria?" in Men Without Women (1927)

“I have noticed that doctors who fail in the practice of medicine have a tendency to seek one another's company and aid in consultation. A doctor who cannot take out your appendix properly will recommend you to a doctor who will be unable to remove your tonsils with success.”

Ernest Hemingway book A Farewell to Arms

Source: A Farewell to Arms (1929), Ch. 15

“That is all there is to the story. Catherine died and you will die and I will die and that is all I can promise you.”

Ernest Hemingway book A Farewell to Arms

One of the alternative endings to the novel, published in A Farewell to Arms The Special Edition.
A Farewell to Arms (1929)

“To me a heaven would be a big bull ring with me holding two barrera seats and a trout stream outside that no one else was allowed to fish in and two lovely houses in the town; one where I would have my wife and children and be monogamous and love them truly and well and the other where I would have my nine beautiful mistresses on 9 different floors and one house would be fitted up with special copies of the Dial printed on soft tissue and kept in the toilets on every floor and in the other house we would use the American Mercury and the New Republic.”

Ernest Hemingway

Letter to F. Scott Fitzgerald (1 July 1925); published in Ernest Hemingway: Selected Letters 1917–1961 (1981) edited by Carlos Baker