1. We had to evolve the truth from a mass of confused evidence.
    我们不得不从大量庞杂的证据中推断出事情的真象。

2. Traditional custom, taken the world over, is a mass of detailed behaviour more astonishing than what any one person can ever evolve in individual actions, no matter how aberrant.
    从世界范围来看，传统风俗是由许多细节性的习惯行为组成，它比任何一个养成的行为都更加引人注目，不管个人行为多么异常。

3. One person can evolve in individual actions, no matter how aberrant.
    一个人在他的个人活动中的行为会发展，不管其人的个人行为是如何越出常轨。

4. Only the Earth provides ideal conditions, and even here it has taken more than four billion years for plant and animal life to evolve.
    只有地球提供理想的条件，而即使在这里，植物和动物的进化也用了40亿年的时间。