Tradition

When tradition thus becomes master it does so in such a way that what it 'transmits' is made so inaccessible, proximally and for the most part, that it rather becomes concealed. Tradition takes what has come down to us and delivers it over to self-evidence; it blocks our access to those primordial 'sources' from which the categories and concepts handed down to us have been in part quite genuinely drawn. Indeed it makes us forget that they have had such and origin, and makes us suppose that the necessity of going back to these sources is something which we need not even understand.

Martin Heidegger