应对不自由世界的唯一方法是变得如此绝对自由，以至于你的存在本身就是一种反叛。
"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."
Sustainability isn't an option; it's a responsibility we owe to future generations.
The knowledge of the past stays with us to spur us on to new achievements.
The deepest problems of modern life derive from the claim of the individual to preserve the autonomy and individuality of his existence in the face of overwhelming social forces, of historical heritage, of external culture, and of the technique of life.
译文：对于那些不熟悉的事情不要随便怀疑，与自己不同的意见不要轻易反对，这才是公正无私的好态度。
爱是充实了的生命，正如盛满了酒的酒杯。
保持渴望，保持愚钝，但最重要的是保持谦逊。