Mediocrity knows nothing higher than itself, but talent instantly recognizes genius.

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. But I abhor the dull routine of existence. I crave for mental exaltation.

Whenever you have eliminated the impossible, whatever remains, however improbable, must be the truth.