LH sums up this mammoth cinematic undertaking, in the Filmgoer’s Companion:

‘D. W. Griffith’s epic film, subtitled ‘Love’s Struggle through the Ages’, is a sentimentally-conceived examination of intolerance in four periods of history.  The narrative moves constantly from one story to another, with frenzied cross-cutting at the climax.  The spectacle of the Babylon sequence is on a massive scale, but the public were confused and the film was long considered a commercial failure.’