naturalist

I am sometimes described as a naturalist.

有时我也被称作自然主义者。

An American naturalist wrote:"a patriot must always be ready to defend his country against its government".

一位美国自然主义者写道：“爱国者要随时准备好为了保卫国家而与政府斗争！”

To illustrate this, let me refer to the naturalist science of the 19th century, and the effects it had on our opinions of life.

为了诠释这点，我要引用下19世纪的自然主义科学及其它对我们的生活观念所产生的影响。