It enlarges the field of selection.

When you choose from a greater number, you can bring your choice to a finer point!" "You talk like Sardanapalus!" exclaimed Tristram.
"You say all this to the right person," said Newman's hostess.

"I happen to number among my friends the loveliest woman in the world.

Neither more nor less.

I don't say a very charming person or a very estimable woman or a very great beauty; I say simply the loveliest woman in the world." "The deuce!" cried Tristram, "you have kept very quiet about her.