When did hemingway say "It is only the details of how he lived and how he died that distinguish one man from another"

Earnest Hemingway was one of the finest writer and novelist in the history of English literature. His work is read even today by all generations. Hemingway once quoted, "Every man's life ends the same way. It is only the details of how he lived and how he died that distinguish one man from another." What he meant by this quote is simply to live life to the fullest, like there is no tomorrow.

There's no real evidence of when exactly did Hemingway said this quote. But according to some this quote is an foreword taken from the book 'Papa Hemingway' written by AE Hotchner. Hotchner was Hemingway's friend who traveled with him across countries. And for like almost 15 years they both kept having a conversation and Hotchner kept a note of all the things Hemingway said him.