On this hapless earth
There's small sincerity of mirth
And laughter oft but an art
To drown the outcry of the heart

Hartley Coleridge, Address to Certain Gold fishes

As the cracking of thorns under a pot, so is the laughter of the fool

Old Testament, Ecclesiastes, VII, 6

Our sincerest laughter
With some pain is fraught

Shelley, To a Sklark

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