ABSTRACT
Everyone knows the harshness of nature; how mistakes become extinct. Yet the unique characteristic of man is that his reason and imagination have enabled him to develop and adapt to his environment. And history shows how technological development has liberated him. At first it was the discovery of a type of wheat which gave an abundant yield, achieved by ploughing, sowing and reaping, which led to the possibility of settlement and the building of permanent structures. Today there is the exploration of the deep-the conquest of space.
