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Though the birth of some great political character was supposed to be heralded by this mysterious star, its prophetic meaning might with more propriety apply to the extraordinary man who astonished his contemporaries by discoveries in the heavens, and who forms the subject of this lecture; or it poetically might apply to the brilliancy of the century itself in which it appeared. The sixteenth century cannot be compared with the nineteenth century in the variety and scope of scientific discoveries; but, compared with the ages which had preceded it, it was a memorable epoch, marked by the simultaneous breaking up of the darkness of mediaeval Europe, and the bursting forth of new energies in all departments of human thought and action. In that century arose great artists, poets, philosophers, theologians, reformers, navigators, jurists, statesmen, whose genius has scarcely since been surpassed. In Italy it was marked by the triumphs of scholars and artists; in Germany and France, by reformers and warriors; in England, by that splendid constellation that shed glory on the reign of Elizabeth.

Close upon the artists who followed Da Vinci, to Salvator Rosa, were those scholars of whom Emanuel Chrysoloras, Erasmus, and Scaliger were the representatives,--going back to the classic fountains of Greece and Rome, reviving a study for antiquity, breathing a new spirit into universities, enriching vernacular tongues, collecting and collating manuscripts, translating the Scriptures, and stimulating the learned to emancipate themselves from the trammels of the scholastic philosophers.

Then rose up the reformers, headed by Luther, consigning to destruction the emblems and ceremonies of mediaeval superstition, defying popes, burning bulls, ridiculing monks, exposing frauds, unravelling sophistries, attacking vices and traditions with the new arms of reason, and asserting before councils and dignitaries the right of private judgment and the supreme authority of the Bible in all matters of religious faith.

And then appeared the defenders of their cause, by force of arms maintaining the great rights of religious liberty in France, Germany, Switzerland, Holland, and England, until Protestantism was established in half of the countries that had for more than a thousand years servilely bowed down to the authority of the popes.

Genius stimulates and enterprise multiplies all the energies and aims of emancipated millions. Before the close of the sixteenth century new continents are colonized, new modes of warfare are introduced, manuscripts are changed into printed books, the comforts of life are increased, governments are more firmly established, and learned men are enriched and honored. Feudalism has succumbed to central power, and barons revolve around their sovereign at court rather than compose an independent authority.

Before that century had been numbered with the ages past, the Portuguese had sailed to the East Indies, Sir Francis Drake had circumnavigated the globe, Pizarro had conquered Peru, Sir Walter Raleigh had colonized Virginia, Ricci had penetrated to China, Lescot had planned the palace of the Louvre, Raphael had painted the Transfiguration, Michael Angelo had raised the dome of St.

Peter's, Giacomo della Porta had ornamented the Vatican with mosaics, Copernicus had taught the true centre of planetary motion, Dumoulin had introduced into French jurisprudence the principles of the Justinian code, Ariosto had published the "Orlando Furioso,"Cervantes had written "Don Quixote," Spenser had dedicated his "Fairy Queen," Shakspeare had composed his immortal dramas, Hooker had devised his "Ecclesiastical Polity," Cranmer had published his Forty-two Articles, John Calvin had dedicated to Francis I. his celebrated "Institutes," Luther had translated the Bible, Bacon had begun the "Instauration of Philosophy," Bellarmine had systematized the Roman Catholic theology, Henry IV. had signed the Edict of Nantes, Queen Elizabeth had defeated the Invincible Armada, and William the Silent had achieved the independence of Holland.

Such were some of the lights and some of the enterprises of that great age, when the profoundest questions pertaining to philosophy, religion, law, and government were discussed with the enthusiasm and freshness of a revolutionary age; when men felt the inspiration of a new life, and looked back on the Middle Ages with disgust and hatred, as a period which enslaved the human soul. But what peculiarly marked that period was the commencement of those marvellous discoveries in science which have enriched our times and added to the material blessings of the new civilization. Tycho Brahe, Copernicus, Galileo, Kepler, and Bacon inaugurated the era which led to progressive improvements in the physical condition of society, and to those scientific marvels which have followed in such quick succession and produced such astonishing changes that we are fain to boast that we have entered upon the most fortunate and triumphant epoch in our world's history.

Many men might be taken as the representatives of this new era of science and material inventions, but I select Galileo Galilei as one of the most interesting in his life, opinions, and conflicts.