first things first

Deal with matters of highest priority first; deal with matters in logical sequence.1922, H. G. Wells, The Secret Places of the Heart, ch.4,"First things first," said Sir Richmond. If we set about getting fuel sanely, if we do it as the deliberate, co-operative act of the whole species, then it follows that we shall look very closely into the use that is being made of it.1999, Frank Pellegrini, "House Republicans Quell Mutiny Over Tax Bounty," Time, 23 Jul.,Judging by the polls