“If you have the power to put a stop to subjugation, yet look the other way while it happens, then you have done it yourselves,”
“It will be enough for me, however, if these words of mine are judged useful by those who want to understand clearly the events which happened in the past and which (human nature being what it is) will, at some time or other and in much the same ways, be repeated in the future. My work is not a piece of writing designed to meet the taste of an immediate public, but was done to last for ever.”
― Thucydides, The History of the Peloponnesian War
A couple of quotes from an ancient master.