My mind rebels at stagnation. Give me problems, give me work, give me the most abstruse cryptogram, or the most intricate analysis, and I am in my own proper atmosphere. I can dispense then with artificial stimulants. But I abhor the dull routine of existence. I crave for mental exaltation.Note: You may download the Grammar eBook Build Your Vocabulary and get all 406 vocabulary words.
—Sir Arthur Conan Doyle The Sign of Four (1890)