Blessed is the man, who having nothing to say, abstains from giving wordy evidence of the fact. (George Eliot)

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)

Try to learn something about everything and everything about something. (Thomas Henry Huxley)

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