Beware of bugs in the above code; I have only proved it correct, not tried it. -- Donald Knuth

All non-trivial abstractions, to some degree, are leaky. -- Joel Spolsky (The Law of Leaky Abstractions)

We will never become a truly paper-less society until the Palm Pilot folks come out with WipeMe 1.0. -- Andy Pierson

You know you're in love when you can't fall asleep because reality is finally better than your dreams. -- Dr. Seuss

Workers of the world, the chains that bind you are not held in place by a ruling class, a "superior" race, by society, the state, or a leader. They are held in place by none other than yourself. Those who seek to exploit are not themselves free, for they place no value in freedom. Who is it that really employs you and commands you to pick up your daily load? And who is it that you allow to pass judgment on the adequacy of your toil? Who have you empowered to dangle the carrot before you and threaten with disapproval? Who, when you wake each morning, sends you off to what you call your work? Is there an "I want to" behind all your "I have to," or have you been so long forgotten to yourself that "I want" exists only as an idea in your head? If you have disconnected from your soul's desire and are drowning in an ocean of "have to," then rise up and overthrow your master. Begin the journey toward emancipation. Work only in such a way that you are truly self-employed. -- Tim Gallwey, The inner game of work

In general, we can think of data as defined by some collection of selectors and constructors, together with specified conditions that these procedures must fulfill in order to be a valid representation. -- SICP, What is meant by data?

The starting point of all achievement is desire. ~Napolean Hill

Don’t be afraid to give up the good to go for the great. ~John D. Rockefeller

Change your thoughts and you change your world. –Norman Vincent Peale

If you look at what you have in life, you'll always have more. If you look at what you don't have in life, you'll never have enough. –Oprah Winfrey