跨国合作对解决全球粮食问题至关重要。
永远不要问一位女士是否怀孕了，需要时她会说出来。
The past is a source of knowledge, and the future is a source of hope. Love of the past implies faith in the future.
如果你不适应变化，你就会落后。
我不是因为快乐而歌唱，而是因为歌唱而快乐。
The ability to be alone is the ability to love. It may look paradoxical to you, but it’s not. It is an existential truth: only those who can be alone are capable of love, of sharing, of going into the deepest core of another human being—without possessing the other, without becoming dependent on the other, without reducing the other to a thing, and without becoming addicted to the other.
科学的进步在于每一步发现一种新的秩序，这种秩序将长期以来看似不同的事物统一起来。