From Longman Dictionary of Contemporary Englishthe sooner the better/the bigger the better etcthe sooner the better/the bigger the better etcPREFERused to emphasize that you would prefer something to happen as soon as possible, want something to be as big as possible etc School finishes at the end of the week, and the sooner the better as far as I’m concerned. The younger you start learning a language, the better you’ll speak it. → better