A.S. Byatt in The Children's Book (2009) answers:
But Julian was clever and observant enough to see that love was at its most intense before it was reciprocated. 'Love is a standing, or still growing light / And his first moment, after noon, is night.' 'What will it be when that the watery palate tastes indeed / Love's thrice repured nectar?'--p. 251
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