The optimist proclaims that we live in the best of all possible worlds, and the pessimist fears this is true. (James Branch Cabell)

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

In the End, we will remember not the words of our enemies, but the silence of our friends. (Martin Luther King Jr.)

Life is pleasant.Death is peaceful.It’s the transition that’s troublesome. (Isaac Asimov)