not only to create but also to annihilate, it has the at the same time provided humanity with a supreme challenge. and a supreme testing. if the challenge and the testing are too much for humanity then we are all doomed. but i believe that the future can be bright, and i believe it can be certain. man is still the master of his own fate. and i believe that the power of science -- and the responsibility of science have offered man kind a new opportunity. not only for intellectual growth. but for moral discipline. not only for the acquisition of knowledge, but for the streng strengthening of our nerve and our will. we are bound to grope for a time as we grapple with problems without precedent in human history. but wisdom is the child of experience. and the year since man unlocked the power, stored within the atom, the world has the made