Fear of error which everything recalls to me at every moment of the flight of my ideas, this mania for control, makes men prefer reason's imagination to the imagination of the senses. And yet it is always the imagination alone which is at work.
(Louis Aragon (1897-1982), French poet. "Preface to a Modern Mythology," Paris Peasant (1926).)
The imagination is the spur of delights ... all depends upon it, it is the mainspring of everything; now, is it not by means of the imagination one knows joy? Is it not of the imagination that the sharpest pleasures arise?
(Marquis de Sade (1740-1814), French author. Dolmancé, "Dialogue the Third," Philosophy in the Bedroom (1795).)