永远保持节俭,除非是为了自己的热情。
Innovation in physics often comes from looking at old problems in new ways.
译文:花开花落已两载,看着盛开的花,想到两年未曾回家,就不免伤心落泪。小船还系在岸边,虽然我不能东归,飘零在外的我,心却长系故园。