It seems to me that if you or I must choose between two courses of thought or action, we should remember our dying and try so to live that our death brings no pleasure to the world.
生物学的美丽在于它能够通过简单的原理解释生命的多样性。
如果你想看看这个国家的本质,你必须乘坐铁路。当你快速穿过时,看看外面,你会发现美国的真实面貌。