Keep on going and the chances are you will stumble on something, perhaps when you are least expecting it. I have never heard of anyone stumbling on something sitting down.
— Charles F. Kettering

I told her we were going to get married, and all she could talk about was frogs. She said there's these hills where it's hot and rains all the time, and in the rainforests there are these very tall trees and right in the top branches of these trees there are these great big flowers called...bromeliads, I think, and water gets into the flowers and makes little pools and there's a type of frog which lays eggs in the pools and tadpoles hatch and grow into new frogs and these little frogs live their whole lives in the flowers right at the top of the trees and don't even know about the ground, and once you know the world is full of things like that, your life is never the same.

- Terry Pratchett, Wings