El Lissitzky
El Lissitzky's entire career was based on his belief that the artist could be an agent for change. Lissitzky, who was Jewish, began his career illustrating Yiddish children's books. This was to promote Jewish culture in Russia, which had just ended its antisemitic laws. He started teaching at 15; and taught throughout his life. Over the years, he taught in a variety of positions, schools and artistic media, spreading and exchanging ideas.