The general population doesn't know what's happening, and it doesn't even know that it doesn't know.
数学不是观赏性运动——你必须参与其中才能欣赏它的美。
市场瞬息万变,唯有以变应变才能立于不败之地。
The earth is a dot. The moon is a dot. The sun is a dot. The stars are dots.