Progress is impossible without change. And those who cannot change their minds, cannot change anything. - George Bernard Shaw

For now you have only Mahomet and his dupes, and the Maid and her dupes; but what will it be when every girl thinks herself a Joan and every man a Mahomet?

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.

Mr. Shaw himself said once, “I am a typical Irishman; my family came from Yorkshire.” Scarcely anyone but a typical Irishman could have made the remark. It is in fact a bull, a conscious bull. A bull is only a paradox which people are too stupid to understand. It is the rapid summary of something which is at once so true and so complex that the speaker who has the swift intelligence to perceive it, has not the slow patience to explain it. Mystical dogmas are much of this kind. Dogmas are often spoken of as if they were signs of the slowness or endurance of the human mind. As a matter of fact, they are marks of mental promptitude and lucid impatience. A man will put his meaning mystically because he cannot waste time in putting it rationally. Dogmas are not dark and mysterious; rather a dogma is like a flash of lightning — an instantaneous lucidity that opens across a whole landscape. Of the same nature are Irish bulls; they are summaries which are too true to be consistent. The Irish make Irish bulls for the same reason that they accept Papal bulls. It is because it is better to speak wisdom foolishly, like the Saints, rather than to speak folly wisely, like the Dons.