Hemingway frequented Stein's salon, but the two had an uneven relationship. They began as close friends, with Hemingway admiring Stein as a mentor, but they later grew apart, especially after Stein called Hemingway "yellow" in "The Autobiography of Alice B. Toklas." Upon the birth of his son, Hemingway asked Stein to be the godmother of his child. While Stein has been credited with inventing the term "Lost Generation" for those whose defining moment in time and coming of age had been World War I and its aftermath, there are at least three versions of the story that led to the phrase, two by Hemingway and one by Stein.