A preacher and a poet are in love with the same woman. The former is her husband, the latter wants to woo her away. Both are shocked by her ultimate choice and the reasons for it. The comedy Candida by the divine George Bernard Shaw, was written in 1894 and published for the first time in 1894. The always interesting Washington Stage Guild is performing it through Oct. 20 at the Undercroft Theatre, 900 Massachusetts Ave. NW. Tickets are $50 to $60. stageguild.org.