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There is "a mental fatigue which is a spurious kind of remorse, and has all the anguish of the nobler feeling. It is an utter weariness and prostration of spirit, a sickness of heart and mind, a bitter longing to lie down and die.

Mary Elizabeth Braddon (1872). “Charlotte's Inheritance: A Novel”, p.68
There is a mental fatigue which is a spurious kind of remorse, and has all the anguish of the nobler feeling. It is an utter weariness and prostration of spirit, a sickness of heart and mind, a bitter longing to lie