The security dilemma is a fundamental feature of international politics, as states' efforts to increase their own security often decrease the security of others.

I have always believed that music can unite people, regardless of their differences.

The environment is a long-term issue that requires long-term commitment.

La poesía es el lenguaje del corazón.

A musician must make music, an artist must paint, a poet must write, if he is to be ultimately at peace with himself.

我不知道极限在哪里，但我想去那里。

True progress happens when we balance economic growth with environmental stewardship.