成长是痛苦的，但没有什么比停滞不前更痛苦。
The books that we reread the most are the ones that most clearly describe the world we already know.
我们重读最多的书是那些最清楚地描述我们已经知道的世界的书。
The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.
The future is not a result of choices among alternative paths offered by the present, but a place that is created—created first in the mind and will, created next in activity.
The truth is not always what we want to hear, but it is what we need to know.
