让人们保持被动和顺从的聪明方法是严格限制可接受意见的范围，但在该范围内允许非常活跃的辩论。
The smart way to keep people passive and obedient is to strictly limit the spectrum of acceptable opinion, but allow very lively debate within that spectrum.
The only limit to our realization of tomorrow is our doubts of today.
我不是白天，我是黑夜。
没有情感，就不会有黑暗向光明、冷漠向活力的转变。
你知道的越多，你需要的就越少。