事实上,光的理论是我非常感兴趣的研究课题,我对光的本质形成了明确的看法。
译文:借鉴前代兴衰,考察当下得失。《通鉴》的写作宗旨,直指现实关怀。
It's not a rebel song, it's 'Sunday Bloody Sunday'.
In mathematics, the art of proposing a question must be held of higher value than solving it.