The philosophy of Ancient Greece has a significant influence on modern thinking.

The buildings of Ancient Rome still inspire many people today.

He was swimming freely as if he was a fish playing in the pot.

He is a person who follows his own path, and the phrase 'a big fish does not swim into a small stream' fits him perfectly.

I am very interested in marine biology.

He is learning Ancient Greek language.

Old Church Slavonic is the oldest recorded language of the Slavic group.

Old Church Slavonic is the first language written by the Slavs.