A musician must make music, an artist must paint, a poet must write, if he is to be ultimately at peace with himself.
音乐家必须创作音乐，艺术家必须绘画，诗人必须写作，只有这样他们才能最终与自己和解。
Energy security is the cornerstone of national security. We must make every effort to ensure the security of national energy supply.
The past is a ghost, haunting the present.