It gave the symbolic meanings of the different animals. The lamb and unicorn were symbols of Christ; sheep, fish, and deer, of his followers; dragons, serpents, and bears, of the devil; swine, hares, hyenas, of gluttony; the disorderly luxuriance of snow meant death, the phoenix the resurrection, and so forth, indeed, whole categories of animals were turned into allegories of the truths of salvation.[41] The cleverest fables of animals were in _Isengrimen_, published in Ghent about 1140 in Latin verse--the story of the sick lion and his cure by the fox, and the outwitting of the wolf. Such fables did not remain special to German national literature, but became popular subjects in the literature of the whole world; and it is a significant fact that they afterwards took root especially in Flanders, where the taste for still life and delight in Nature has always found a home, and which became the nursery, in later times, of landscape, animal, and genre painting. CHAPTER III THE NAIVE FEELING AT THE TIME OF THE CRUSADES In the development and maturing of the race, as of the individual, nothing is more helpful than contact with foreign elements, people of other manners, thoughts, and feelings. Intimate intercourse between different nationalities rouses what is best in the soul of a nation, inviting, as it does, to discussion and opposition, as well as to the acquisition of new ideas. The conquests of Alexander the Great opened up a new world to the Greek, and a new culture arose--Hellenism. It was a new world that rose before the astonished eyes of the Crusader--in his case too, the East; but the resulting culture did not last. The most diverse motives fused to bring about this great migration to a land at once unknown and yet, through religion, familiar; and a great variety of characters and nations met under the banner of the Cross. Naturally this shaking up together, not only of Europeans among themselves, but of the eastern with the western world, brought about a complete revolution in manners, speech, art, science, trade, manufacture, thought, and feeling, and so became an important factor in general progress. The narrow boundaries of nationality, race, and education were broken through; all felt equal before the leading idea; men, places, plants, and animals were alike new and wonderful. Little wonder if German knights returning home from the East wove fiction with their fact, and produced the most fantastic and adventurous heroic songs.