My wick hath a thief in it:

Do you know what it is to succumb under an insurmountable day-mare,—”a whoreson lethargy,” Falstaff calls it,—an indisposition to do anything, or to be anything,—a total deadness and distaste,—a suspension of vitality,—an indifference to locality,—a numb, soporifical, good-for-nothingness,—an ossification all over,—an oyster-like insensibility to the passing events,—a mind-stupor,—a brawny defiance to the needles of a thrusting-in conscience. Did you ever have a very bad cold, with a total irresolution to submit to water-gruel processes?

Source: Letters of Note