h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

Most famous quotes are very wrong. Therefore I am going to pick one at random and make fun of it.

"If you can dream it, you can do it." - Walt Disney

Here Disney is using a metaphor. Metaphors are BAD! Once, a while ago, and I'm sure everyone else has too (or at least most people), I dreamt that I could fly without physical means of support; i.e. by running and jumping. It was a pretty cool dream, but unfortunately I haven't been able to achieve this proverbial "doing" of flight. If he is talking about daydreaming, I can always daydream that I could get a sex change by sitting in my little office chair in programming class and nothing else. Obviously I can't do that.