"Traveling is a brutality. It forces you to trust strangers and to lose sight of all that familiar comfort of home and friends. You are constantly off balance. Nothing is yours except the essential things: air, sleep, dreams, the sea, the sky - all things tending towards the eternal or what we imagine of it."
出自汉·桓宽《盐铁论·疾贪》。贪婪卑鄙的风气源自处于上位的统治者，而不在下层民众；对民众的教育、对国民素质的改良在于执政者的措施是否得当，而不在于人民自身的素质。
当混凝土捕捉到光线时，它可以像木头一样温暖。
科学是照亮我们前进道路的火炬。