人的声音是最强大的工具。
"The human voice is the most powerful instrument of all."
没有生态平衡，就没有真正的经济效益。
Every book is a quotation; and every house is a quotation out of all forests, and mines, and stone quarries; and every man is a quotation from all his ancestors.
The things that we love tell us what we are.
Interpretation is the revenge of the intellect upon art.
引力的存在是最明显的实验事实，但从理论角度来看，它是最神秘的力量。