What makes a book rare and valuable? It all comes down to supply and demand -- and condition. The rarest books in the world are highly sought after by collectors because they're associated with a particular author or a major historical event or era, or simply because they're incredibly old.

Everyone makes mistakes, and lexicographers are no exception. Even now, when most dictionaries are produced by large teams, errors ranging from typos to incorrect definitions can make their way in - after all, dictionaries are big books that take a lot of work to write. Samuel Johnson famously defined ‘pastern’ as the ‘knee’ of a horse (it is in fact a part of the horse’s foot), and when asked why, is said to have replied ‘ignorance, Madam, pure ignorance’.

Both my parents were born in Germany. They moved to Canada and then had me, so I’m about as German as a Canadian can be – which probably explains my weakness for sauerkraut, oom-pa-pa, and marzipan.

Most books are intended to be easily read and understood,these are a complete enigma.

They use their cunning, and their expertise and courage to solve crimes.

In Texas it is illegal to have sex with a fish, in Florida it is illegal to get a fish drunk, and N.Carolina thought both laws were good, so in NC it is illegal to have sex with a drunk fish.

The most poisonous fish in the world is the Stone fish.

The largest known fish in the sea is the Whale Shark. It weighs up to 20 tons and grows to a length of 40 feet.

• The average cough comes out of your mouth at 60MPH.
• When the Titanic sank there was 7,500 lbs of ham on it. (Not including Leonardo DeCaprio)
• Hanukkah can be spelled in 17 different ways: Channuka, Channukah, Chanuka, Chanukah, Chanuko, Hannuka, Hannukah, Hanuka, Hanukah, Hanukkah, Kanukkah, Khannuka, Khannukah, Khanuka, Khanukah, and Khanukkah, and Chanuccah.
• A humpback whale's milk is 54 percent fat.
• It's impossible to sneeze with your eyes open.
• You can't kill yourself by holding your breath.

It sounds to us like a very healthy proverb, isn´t? But it is not what an author of this saying implied!

In 1915 the average annual family income in the United States was $687 a year.

In 1975 a birdhouse costing $10,000 was built in Quebec by the city fathers.

In 1060 a coin was minted in England shaped like a clover. The user could break off any of the four leaves and use them as separate pieces of currency.