"In the Middle Ages society was far more static and was essentially hierarchical in nature. As a result the causal or genetic attitude was far less important in medieval thought that it is in ours and the concept of evolution had little influence compared with the role of symbolism in the general world-view... Moreover, even the concept of time itself was of less significance to historians... For St Augustine the date of an event was of far less importance than its theological significance. His tendency to see everything in a theological rather than in a historical perspective was a powerful influence in the Middle Ages... It was not until the nineteenth century that the fundamental significance of the historical perspective came to be generally recognized. This was several hundred years after the theory and practice of perspective had been developed by painters and others. In each case a new way of looking at the world resulted."