It was a high speech of Seneca that "The good things which belong to prosperity are to be wished, but the good things that belong to adversity are to be admired."
Most of the classical citations you shall hear or read in the current journals or speeches were not drawn from the originals, but from previous quotations in English books.
Many terms which have now dropped out of favour will be revived, and those that are at present respectable, will drop out, if useage so choose with whom resides the decision and the judgment and the code of speech.