Quotes from work
Caesar and Cleopatra

Caesar and Cleopatra is a play written in 1898 by George Bernard Shaw that depicts a fictionalized account of the relationship between Julius Caesar and Cleopatra. It was first published with Captain Brassbound's Conversion and The Devil's Disciple in Shaw's 1901 collection Three Plays for Puritans. It was first performed in a single staged reading at Newcastle upon Tyne on 15 March 1899, to secure the copyright. The play was produced in New York in 1906 and in London at the Savoy Theatre in 1907.

“THEODOTUS: Caesar: you are a stranger here, and not conversant with our laws. The kings and queens of Egypt may not marry except with their own royal blood. Ptolemy and Cleopatra are born king and consort just as they are born brother and sister.
BRITANNUS (shocked): Caesar: this is not proper.
THEODOTUS (outraged): How!
CAESAR (recovering his self-possession): Pardon him, Theodotus: he is a barbarian, and thinks that the customs of his tribe and island are the laws of nature.”

George Bernard Shaw Caesar and Cleopatra

Act II; sometimes paraphrased as: The customs of your tribe are not laws of nature.
1890s, Caesar and Cleopatra (1898)

“When a stupid man is doing something he is ashamed of, he always declares that it is his duty.”

George Bernard Shaw Caesar and Cleopatra

Act III http://books.google.com/books?id=3wAOAQAAMAAJ <br class="br">Source: 1890s, Caesar and Cleopatra (1898)

“… a man of great common sense and good taste, meaning thereby a man without originality or moral courage.”

George Bernard Shaw Caesar and Cleopatra

Source: Caesar and Cleopatra