科学不是形式逻辑——它需要思想的自由发挥，与其他任何创造性艺术一样。

夜晚是一个自己照亮自己的世界。

The whites came to this land for a fresh start and to escape the tyranny of their masters, just as the freemen had fled theirs. But the ideals they held up for themselves, they denied others.

没有人民的普遍知识，自由就无法得到保障。