A mind needs books like as word needs a whetstone.
思想需要书来磨砺,正如宝剑需要磨刀石。
——〈在东京对同志的声言〉,1915年10月25日
Most people are other people. Their thoughts are someone else's opinions, their lives a mimicry, their passions a quotation.
量子力学的发展表明,经典的空间和时间概念不足以描述原子世界。
勇气不是没有恐惧,而是战胜恐惧。