He was a true revolutionary, aiming for social reform.

Lenin was a Russian revolutionary.

He sparked a revolution in science.

My house is near the mountains.

I have been to Russia.

He can speak Russian fluently.

He has many Russian friends.

He is deeply immersed in the study of Leninism.

Leninism is a form of communism that particularly emphasizes workers' rights.

I think his ideas are revolutionary.