A mathematician is a blind man in a dark room looking for a black cat which isn't there.

If you don't read the newspaper, you're uninformed. If you read the newspaper, you're mis-informed.

The two most important days in your life are the day you are born and the day you find out why.

"If you are kind, people may accuse you of selfish, ulterior motives: Be kind anyway. If you are successful you will win some false friends and true enemies: Succeed anyway. If you are honest and frank people will try to cheat you: Be honest anyway. What you spend years building, someone could destroy overnight: Build anyway. If you find serenity and happiness, they may be jealous of you: Be happy anyway. The good you do today, will often be forgotten by tomorrow: Do good anyway. Give the world the best you have, and it may never be enough: Give your best anyway."

Life is an opportunity, benefit from it. Life is beauty, admire it. Life is a dream, realize it. Life is a challenge, meet it. Life is a duty, complete it. Life is a game, play it. Life is a promise, fulfill it. Life is sorrow, overcome it. Life is a song, sing it. Life is a struggle, accept it. Life is a tragedy, confront it. Life is an adventure, dare it. Life is luck, make it. Life is too precious, do not destroy it. Life is life, fight for it.

We are responsible for what we are, and whatever we wish ourselves to be, we have the power to make ourselves. If what we are now has been the result of our own past actions, it certainly follows that whatever we wish to be in the future can be produced by our present actions; so we have to know how to act.