"The past and the remembrance of it have a never-ending power, and if painful longings arise to give ourselves up to it, it has yet an inexpressible charm. We can shut ourselves up in thought with those whom we have loved and lost — we can turn away in peace and freedom from all that is external, and though still active and beneficent, for ourselves we ask nothing, for everything that the heart has the power to enjoy is within our breast."
January 1, 1970
https://en.wikiquote.org/wiki/Wilhelm_von_Humboldt