Ai Weiwei is one of the world's most prominent artists and political activists. His books include Weiwei-isms and Humanity (both Princeton). His works have been exhibited at Tate Modern, the Guggenheim, and the Museum of Modern Art. He lives in Berlin. Twitter @aiww

Ai Weiwei is one of the world's most prominent artists and political activists. His books include Weiwei-isms and Humanity (both Princeton). His works have been exhibited at Tate Modern, the Guggenheim, and the Museum of Modern Art. He lives in Berlin. Twitter @aiww