文明的分布很大程度上是气候的问题。
Life is not easy for any of us. But what of that? We must have perseverance and above all confidence in ourselves. We must believe that we are gifted for something and that this thing must be attained.
Every new planet we find is a step closer to answering the age-old question: Are we alone in the universe?
在小说中，真相往往比事实更可信。
We must accept finite disappointment, but we must never lose infinite hope.