免费的疫苗比昂贵的治疗更有价值，但更难推广。
Free vaccines are more valuable than expensive treatments, yet harder to promote.
我不是光明，我是黑暗。
最重要的是保持开放的心态。
艺术是让我们认识真相的谎言。
Doublethink means the power of holding two contradictory beliefs in one's mind simultaneously, and accepting both of them.