Keido Fukushima - CLEAR AND EMPTY
Sei = 清 = pure, clear, clean, fresh
Kyo = 虚= emptiness, void; In Chinese it means "As If."
I've seen an alternative translation as "Unmoved by the Outside", though that strikes me as being more of a description of the state of mind of "Pure and Empty" rather than a direct translation of the Chinese characters.
Signed: Tofukuji hancho Koyu donin. 東福僧堂更幽道人
seals: upper right - Enichi Kaidō (慧日開堂); lower left - Tōfuku (東福); Keidō (慶道)
