It can, on occasion, be magnificent, and its gravity is continually enlivened by the play upon it, as upon a background, of his picturesque and unexpected fancies.

The exposition of his philosophical principles was attempted in two forms.

He began in English.

He began, in the shape of a personal account, a statement of a series of conclusions to which his thinking had brought him, which he called the "Clue of the Labyrinth," _Filum Labyrinthi_.

But he laid this aside unfinished, and rewrote and completed it in Latin, with the title _Cogitata et Visa_.