The progress of a child is not determined by age, but by the freedom to see everything around him.
儿童的进步不是取决于年龄，而是取决于能够自由地观看他周围的一切。
对称性不仅是自然的一种属性，而且是寻找物理定律的指导原则。
行业与社区之间的合作是可持续林业的关键。
一本书就是你握在手中的一个梦想。
Every discovery in science is built upon the work of countless others before us.
We're flooding people with information. We need to feed it through a processor. A human must turn information into intelligence or knowledge. We've tended to forget that no computer will ever ask a new question.
天文学的历史是一部视野不断退却的历史。