Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
The American dream is powered by American energy.
The true value of a forest cannot be measured in board feet alone.
量子场论的发展表明,真空并非空无一物,而是潜能的海洋。
生命中最伟大的光辉不在于永不坠落,而在于坠落后总能再度升起。