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Necessity may well be called the mother of invention but calamity is the test of integrity.

Samuel Richardson (1820). “Clarissa, Or, The History of a Young Lady: Comprehending the Most Important Concerns of Private Life : and Particularly Shewing the Distresses that May Attend the Misconduct Both of Parents and Children, in Relation to Marriage”, p.255
Necessity may well be called the mother of invention but calamity is the test of integrity.