You must not think that what is hard for you to master is humanly impossible; and if it is humanly possible, consider it to be within your reach.
你不应该认为对你来说难以掌握的东西是不可能的,如果是人类可以实现的,就应该认为它是可以实现的。
教师必须具有健康的体魄,农人的身手,科学的头脑,艺术的兴味,改革社会的精神。
科学不仅是知识的学科,更是一种思维方式。
文章的妙处在于,用一句话就能说尽天下的道理。
With a library you are free, not confined by temporary political climates. It is the most democratic of institutions because no one - but no one at all - can tell you what to read and when and how.