Abstract :
Historically, man has been a curious animal, and this has spurred his progress. He has searched for the invisible and has probed for the unknown; he has groped for the inaccessible and has struggled for the unattainable. He has disobeyed every injunction that he not eat the fruit of the tree of knowledge. But he has accepted the great challenge that if you know the truth, “the truth shall make you free.” The fruit of the tree of knowledge has been sweet, and it has been bitter. If knowledge and truth shattered the dream of some placid Eden, man has been content to labor outside the gates. And today, even though the prospect may sometimes be awesome, he is using all the keys of his genius to unlock the doors that hide Nature´s secrets.
