The theory of light was, in fact, a subject which I had studied with great interest, and I had formed a definite opinion as to the nature of light.
事实上，光的理论是我非常感兴趣的研究课题，我对光的本质形成了明确的看法。
Climate change isn't a distant threat - it's reshaping our forests today.
出自汉·桓宽《盐铁论·疾贪》。欲，想。表，仪表，这句话指身体。下，指下属。先之身，先要求自己。要想影子正，就要先把自己的身子站直；要想下属清廉，自己要先做出表率。这句话以正影先正身为喻，说明正人先正己的道理。
True leadership means making tough decisions today for a better tomorrow.