I don't sing because I'm happy; I'm happy because I sing.
我不是因为快乐而唱歌,我因为唱歌而快乐。
Never stop learning; the moment you do, you stop growing.
The universe could have started in a very smooth and uniform state, and then evolved into the complex and structured cosmos we see today.
国家道德的基础必须建立在私人家庭中。