And life’s short lease on easier terms renew;
To calm the phrensy of the burning brain;
To heal the tortures of imploring pain;
Or, when more powerful ills all efforts brave,
To ease the victim no device can save,
And smooth the stormy passage to the grave.
But man, who knows no good unmix’d and pure,
Oft finds a poison where he sought a cure;
For grave deceivers lodge their labours here,
And cloud the science they pretend to clear;