it goes without saying
It is understood without being said (but will be or was said anyway).
Synonym: needless to say
It goes without saying that you should never have more children than you have car windows. Erma Bombeck
It goes without saying that the desire to accomplish the task with more confidence, to avoid wasting time and labour, and to spare our experimental animals as much as possible, made us strictly observe all the precautions taken by surgeons in respect to their patients. Ivan Pavlov
It goes without saying that any persons may attempt to unite kindred spirits, but, whatever their hopes and longings, none have the right to impose their vision of unity upon the rest. Robert Nozick
It goes without saying that the Jewish people can have no other goal than Palestine and that, whatever the fate of the proposition may be, our attitude toward the land of our fathers is and shall remain unchangeable. Theodor Herzl
It goes without saying that when survival is threatened, struggles erupt between peoples, and unfortunate wars between nations result. Hideki Tōjō
I don't have to tell you it goes without saying there are some things better left unsaid. I think that speaks for itself. The less said about it the better. George Carlin