They have insulated the mind.

With them ideas have become realities, and suspicions certainties; while events have been noted down as seen and heard, which in truth had never occurred.

ROUSSEAU'S phantoms scarcely ever quitted him for a day.

BARRY imagined that he was invisibly persecuted by the Royal Academy, who had even spirited up a gang of housebreakers.

The vivid memoirs of ALFIERI will authenticate what DONNE, who himself had suffered from them, calls "these eclipses, sudden offuscations and darkening of the senses." Too often the man of genius, with a vast and solitary power, darkens the scene of life; he builds a pyramid between himself and the sun.