这是最好的时代，这是最坏的时代。

The best songs come from real emotions and experiences.

You can't control what you don't measure.

Real suffering does not come from outside, but from how we understand it.

The only existence we conceive is the existence of sensible things.

你要格外严谨，尽可能做出最好的东西。

The rise of China and the resurgence of Russia have challenged the idea that liberal democracy is the only viable form of government.