Draco Dormiens Nunquam Titillandus (Latin: "Never Tickle a Sleeping Dragon")
J.K.Rowling - Harry Potter, the Hogwarts motto
"Dragons beget dragons, and phoenixes, phoenixes; and the offspring of mice will know how to chew holes."-Chinese proverb.
"Bargain not with a dragon."
“Fairy Tales are more than true; not because they tell us that dragons exist, but because they tell us that dragons can be beaten.”- G. K. Chesterton
"The age of chivalry is past. Bores have succeeded to dragons."- Benjamin Disraeli
"Come not between the dragon, and his wrath."
-William Shakespeare, King Lear
“So comes snow after fire, and even dragons have their ending.”- J.R.R. Tolkien
"The man who fights too long against dragons becomes a dragon himself" -Friedrich Nietzsche
“The librarian of today, and it will be true still more of the librarians of tomorrow, are not fiery dragons interposed between the people and the books. They are useful public servants, who manage libraries in the interest of the public . . . Many still think that a great reader, or a writer of books, will make an excellent librarian. This is pure fallacy.”- William Osler
"Dragon Sketch" by b.r.e.n.d.a.