If scientific discovery has not been an unalloyed blessing，if it has conferred on mankind the power not only to create but also to annihilate，it has at the same time provided humanity with a supreme challenge and a supreme testing.
If scientific discovery has not been an unalloyed blessing，if it has conferred on mankind the power not only to create but also to annihilate，it has at the same time provided humanity with a supreme challenge and a supreme testing.
如果科学发现不是纯粹的喜事，如果它赋予了人类不仅是创造还有毁灭的力量，它同时就向人性提出了最大的挑战和最大的考验。