Twitter save my marriage. Are these milks or milk?

I just have to drag this out a little more: ‘Sometimes the ancient greek & #39;γάλα& #39; is indeclinable, but if it was never declined we wouldn& #39;t have the dative plural & #39;γαλαξι& #39; (galaxy), so the fate of the universe depends to there being a plural noun & #39;milks& #39;’