but after a few years these works become insipid, because the spirit of the age, i.e., the prevailing concepts, in which alone they could take root, have changed.
obra horiek beroriek hogei urte geroago jadanik dastaezinak dira, zeren denbora-espiritua, nagusi diren kontzeptuak aldatu direlako, zeinetan bakarrik ezar baitzitzaketen erroak.