Art is not about boundaries; it’s about freedom.
Technology should serve both efficiency and ethics in mineral extraction.
"History is not the past—it is the method we have evolved of organizing our ignorance of the past."
森林的真正价值不能用板材英尺来衡量,而应该用地球的呼吸来衡量。
化学是一门研究物质性质及其变化的科学。