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Praise, like gold and diamonds, owes its value only to its scarcity. It becomes cheap as it becomes vulgar, and will no longer raise expectation or animate enterprise.

Samuel Johnson, Elizabeth Carter, Samuel Richardson, Catherine Talbot (1825). “The Rambler: A Periodical Paper, Published in 1750, 1751, 1752”, p.235
Praise, like gold and diamonds, owes its value only to its scarcity. It becomes cheap as it becomes vulgar, and will no longer raise expectation or animate enterprise.