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Each problem that I solved became a rule which served afterwards to solve other problems. (Rene Descartes, Discours de la Methode)

Do, or do not.There is no ‘try’. (Yoda)

Black holes are where God divided by zero. (Steven Wright)

If you want to make an apple pie from scratch, you must first create the universe. (Carl Sagan)

Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth. (Sherlock Holmes (by Sir Arthur Conan Doyle, 1859-1930))