He always keeps in mind the phrase 'If one learns without thinking, it is a waste.'

The Empire of Japan, written as 大日本帝國 in Kyūjitai, was a nation that existed from 1868 to 1945.

The Imperial Japanese Army was a Japanese military force that existed from the Meiji era to the Showa era.

The Imperial Japanese Navy was once the navy of Japan.

He can speak Min Nan.

Learning Breton language is difficult.

Learning the Erzya language is difficult.

Learning Faroese is difficult.

He is learning the Cornish language.

I am learning Modern Greek.