He helped found the Society for Political Education and its magazine Nihonjin ("Japanese People").

In 1907 the magazine was renamed Nihon Oyobi Nihonjin ("Japan and The Japanese People").

Miyake's other works included Shinzenbi Nihonjin ("Goodness, truth and beauty of The Japanese People") and Giakushu Nihonjin ("Falsehoods, evil and ugliness of the Japanese People").

Miyake was a cooperative nationalist and differed in opinion from universalists.

Miyake felt Japan should make it its mission to study Asia, oppose western imperialism, and nurture the distinctive Japanese sense of beauty.