A logic puzzle by Lewis Carroll, July 2, 1893. What conclusion can be drawn from these premises?

All who neither dance on tight-ropes nor eat penny-buns are old. Pigs that are liable to giddiness are treated with respect. A wise balloonist takes an umbrella with him. No one ought to lunch in public who looks ridiculous and eats penny-buns. Young creatures who go up in balloons are liable to giddiness. Fat creatures who look ridiculous may lunch in public, provided that they do not dance on tight-ropes. No wise creatures dance on tight-ropes if liable to giddiness. A pig looks ridiculous carrying an umbrella. All who do not dance on tight-ropes and who are treated with respect are fat.