His love shone as impartial as the sun.

The line likens a man’s love to sunlight: steady, illuminating, and distributed without favoritism. “Impartial as the sun” suggests an affection that does not discriminate among people or conditions—an ethical ideal of benevolence that reaches even those who may not “deserve” it by ordinary standards. The verb “shone” emphasizes love as something visible in conduct rather than merely felt inwardly, implying warmth, clarity, and life-giving influence. In a literary context, such imagery often elevates the beloved figure into a moral exemplar, framing love as a natural force—constant, generous, and beyond petty human partialities.