Society should make efforts to save endangered species only if the potential extinction of those species is the result of human activities. 社会应该努力拯救濒危物种,只要这些物种的灭绝是人类活动的结果。
The best way to understand the character of a society is to examine the character of the men and women that the society chooses as its heroes or its heroines. 了解一个社会特点最好的方法是去考察被这个社会视为英雄的人们的特点。