Man is free at the moment he wishes to be.

群体在智力上总是低于孤立的个人。

"The unexamined life is not worth living."

意识像河流一样流动，总是朝着有目的的方向前进。

Success in the quarrying industry comes from balancing efficiency with environmental responsibility.

自然知识的改进者绝对拒绝承认所谓的权威。