doctorwho:Now Rassilon found the Eye of Harmony, which balances all things, that they may neither fl
doctorwho:Now Rassilon found the Eye of Harmony, which balances all things, that they may neither flux nor wither nor change their state in any measure. And he caused the Eye to be brought to the world of Gallifrey wherein he sealed this beneficence with the Great Key. Then the people rejoiced. [The Deadly Assassin] -- source link