The grief and terror of Europe when the fall of Constantinople became known revived, or seemed to revive, the old enthusiasm of the crusades. Pius II. attempted to lead Christendom against the Turks, but on the very day on which he embarked his forces drew back, and he was compelled to abandon the attempt. The siege and sack of Otranto by the Turks put an end to all thoughts of a crusade, and the general consternation was only allayed by the death of Mahomet II. in the fifty-first year of his age. His lofty genius aspired to the conquest of Italy; he was possessed of a strong city and a capacious harbour, and the same reign might have been decorated with the trophies of the New and the Ancient Rome. * * * * * FRANÇOIS GUIZOT History of Civilisation in Europe François Pierre Guillaume Guizot, French historian and statesman, was born of Huguenot parents at Nimes on October 4, 1787. The liberal opinions of his family did not save his father from the guillotine in 1794, and the mother fled to Geneva, where Guizot was educated. He went to Paris in the later days of the Empire, and engaged himself at once in literature and politics. His lectures on the History of Civilisation delivered in 1828, 1829, and 1830, during his professorship at the University of Paris, revealed him as a historian with a rare capacity for mastering the broad essential truths of history, co-ordinating them, and expounding them with vigour and impressiveness. His first series of lectures was on "The History of Civilisation in Europe," a masterly abstract of a colossal subject; the second on "The History of Civilisation in France." From 1830 to 1848 Guizot occupied high offices of State, ultimately becoming prime minister; in 1848, like his master Louis Philippe, he had to fly the country. He died on September 12, 1874. _I.--The Nature of Civilisation_ The subject I propose to consider is the civilisation of Europe--its origins, its progress, its aims, its character. The fact of civilisation belongs to what is called the philosophic portion of history; it is a vague, obscure, complex fact, very difficult, I admit, to explain and describe, but none the less requiring explanation and description. It is, indeed, the greatest historical fact, to which all others contribute; it is a kind of ocean which makes the wealth of a people, and in the bosom of which all the elements of the people's life, all the forces of its existence, are joined in unity. What, then, is civilisation--this grave, far-reaching precious reality that seems the expression of the entire life of a people? It seems to me that the first and fundamental fact conveyed by the word civilisation is the fact of progress, of development. But what is this progress? What is this development? Here is the greatest difficulty of all.