* Gertrude Stein: Hemingway met Stein in Paris in the 1920s and became part of her literary circle. Stein's experimental writing style and emphasis on "the lost generation" deeply influenced Hemingway's approach to language, prose, and themes of disillusionment. He often visited her and received her feedback on his work.
* Ezra Pound: Another prominent figure in the Paris literary scene, Pound was a mentor and editor for Hemingway. He encouraged Hemingway's minimalist style and helped him refine his craft. Pound's emphasis on clarity, directness, and precision significantly shaped Hemingway's writing voice.
While these two figures are crucial, remember that other writers like Sherwood Anderson, F. Scott Fitzgerald, and even the journalists he worked with also played a part in shaping Hemingway's literary path.