The _Advancement_ was followed by attempts to give serious effect to its lesson. This was nearly all done in Latin. He did so, because in these works he spoke to a larger and, as he thought, more interested audience; the use of Latin marked the gravity of his subject as one that touched all mankind; and the majesty of Latin suited his taste and his thoughts. Bacon spoke, indeed, impressively on the necessity of entering into the realm of knowledge in the spirit of a little child. He dwelt on the paramount importance of beginning from the very bottom of the scale of fact, of understanding the commonplace things at our feet, so full of wonder and mystery and instruction, before venturing on theories. The sun is not polluted by shining on a dunghill, and no facts were too ignoble to be beneath the notice of the true student of nature. But his own genius was for the grandeur and pomp of general views. The practical details of experimental science were, except in partial instances, yet a great way off; and what there was, he either did not care about or really understand, and had no aptitude for handling. He knew enough to give reality to his argument; he knew, and insisted on it, that the labour of observation and experiment would have to be very heavy and quite indispensable. But his own business was with great principles and new truths; these were what had the real attraction for him; it was the magnificent thoughts and boundless hopes of the approaching "kingdom of man" which kindled his imagination and fired his ambition. "He writes philosophy," said Harvey, who had come to his own great discovery through patient and obscure experiments on frogs and monkeys--"he writes philosophy like a Lord Chancellor." And for this part of the work, the stateliness and dignity of the Latin corresponded to the proud claims which he made for his conception of the knowledge which was to be. English seemed to him too homely to express the hopes of the world, too unstable to be trusted with them. Latin was the language of command and law. His Latin, without enslaving itself to Ciceronian types, and with a free infusion of barbarous but most convenient words from the vast and ingenious terminology of the schoolmen, is singularly forcible and expressive. It is almost always easy and clear; it can be vague and general, and it can be very precise where precision is wanted. 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_. It gains by being in Latin; as Mr.