悲观主义者在每一个机会中看到困难，乐观主义者在每一个困难中看到机会。
A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty.
穷人往往缺乏做出正确选择所需的信息，而即使他们拥有这些信息，也常常不信任它。
我们都是自己记忆的人质。
"The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart."
因此，生产的最终条件是生产条件的再生产。
