In revenge and in love, woman is more barbarous than man.
Literal
Revenge [scope-において], love [scope-において], woman [topic-は] man [comparison-よりも] savage is.
A literary quote (likely Nietzsche). Uses ~において twice for parallel scope: 'in the domain of revenge, in the domain of love.' よりも marks the comparison. 野蛮 means 'savage/barbarous.'