Many of our disappointments and much of our unhappiness arise from our forming false notions of things and persons. We strangely impose upon ourselves; we create a fairyland of happiness. Fancy is fruitful and promises fair, but, like the dog in the fable, we catch at a shadow, and when we find the disappointment, we are vexed, not with ourselves, who are really the imposters, but with the poor, innocent thing or person of whom we have formed such strange ideas.

Abigail Adams (1744-1818) American correspondent, First Lady (1797-1801)

Letter to Hannah Lincoln (5 Oct 1761)
    (Source)