The beauty of mathematics is that it allows us to explore the universe without ever leaving our chairs.
The press is the best instrument for enlightening the mind of man, and improving him as a rational, moral and social being.
Pros are just amateurs who know how to gracefully recover from their mistakes.
农业的韧性意味着为未知做好准备,同时优化已知的部分。
人们生产生活资料的方式首先取决于他们发现并必须再生产的实际手段的性质。