Wiktionary
go without saying
vb. (context idiomatic English) To be obvious, apparent or clear, or already established.
Usage examples of "go without saying".
Nevertheless, some things that go without saying should be said anyway.
A great wave of sorrow passed through me, and I couldn't let him go without saying good-bye.
But there's a horse, my darling old Mabel Minerva -- I can't go without saying good-bye to Mabel Minerva.
First, it should go without saying that this book has been formatted for vertical alignment, small text ONLY.
The danger was obvious enough to go without saying, and he didn't say a thing.