This is his portrait of Mars. Mars is the god of war.

这是他的《战神马尔斯》

耶鲁公开课 - 欧洲文明课程节选

Mercury is a liquid metal, and mercury, the planet, is the fastest moving naked eye heavenly body. Mars, iron, why is Mars red?

水银是液态金属，水银，行星，是肉眼能看到的运动最快的天体,火星，铁，为什么火星是红色的？

麻省理工公开课 - 固态化学导论课程节选