The weight of evidence for an extraordinary claim must be proportioned to its strangeness.

I think that the most important thing is to be true to yourself. You have to be honest with yourself about who you are and what you want.

The great challenge of the modern world is to create institutions that are strong enough to govern effectively but also accountable and responsive to the needs of citizens.

永远不要停止学习，因为世界永远不会停止变化。