It is generally accepted that the term was invented by Petrarch in the 1330s. Writing of those who had come before him, he said that "amidst the errors there shone forth men of genius, no less keen were their eyes, although they were surrounded by darkness and dense gloom" (Petrarch, De sui ipsius et multorum ignorantia)...
Petrarch wrote that history had had two periods: the Classic period of the Romans and Greeks, followed by a time of darkness, in which he saw himself as still living. Humanists believed one day the Roman Empire would rise again and restore Classic cultural purity. The concept of the European Dark Ages thus began as an ideological campaign by humanists to promote Classical culture, and was therefore not a neutral historical analysis. It was invented to express disapproval of one period in time, and the promotion of another.