The true value of a tree is measured in decades, not dollars.
现代研究最惊人的结果是证明了思维法则与自然法则是同一的。
The only way to be happy is to love. To love intensely, so that the pain passes quickly.
四元数的诞生,如同几何、代数、形而上学和诗歌这四位父母的奇特后代。