"I would rather not tell you here things which every German has at heart"

Albert Speer's quote suggests that there are certain matters which are deeply individual and meaningful to the German individuals, and that these matters ought to not be discussed in a public setting. This might be interpreted as a call for regard and privacy for the German people, as well as a tip that some topics are too conscious be gone over in a public online forum. It could also be seen as a pointer that the German individuals have a right to their own viewpoints and beliefs, which these should not be evaluated or gone over in a public setting. Speer's quote might also be seen as a require unity amongst the German individuals, as it implies that there are certain matters which are shared by all Germans and need to be respected and kept personal. Ultimately, Speer's quote is a tip that there are particular matters which are deeply personal and meaningful to the German people, which these matters should be kept private and appreciated.