The most significant threat to liberal democracy today is not from rival ideologies like communism or fascism, but from within—from the rise of populism and the erosion of democratic norms.

The future belongs to those who understand that doing good is good business.

下一次绿色革命必须是高产且对环境负责的。

当痛苦找到意义时，它就不再是痛苦。

The key to sustainable development is to balance economic growth and environmental protection.

数学的本质不仅在于解决问题，还在于提出正确的问题。