That was my modification to a famous quote when I talked to my students in the 1990s. They were optimistic about things like the energy crisis and over-population and global warming. Somehow, somewhere there were scientists bravely working to solve all those problems and things would be okay.
That's not the worst way to think, but it seemed to me that optimism was their cop out. It was their excuse to keep them from having to make any sacrifices themselves. Because somebody else was gonna solve these problems that means I, personally, don't have to drive less, or fly less. Don't have to turn my thermostat down in the winter and up in the summer. I can use electricity for everything (ha ha ha ha) - electric can openers, automatic garage door openers, electric clothes dryers, electric hand dryers, electric hair dryers. I don't have to be troubled to conserve or recycle or car pool or plant a garden. I can buy all the latest toys and indulge myself to the limits of my income. I don't have to save either. Eat, drink and be merry. Superscience will save us before the deluge. We don't have to be part of the solution.
But I did enjoy your post. I do live like an optimist. I dive into battles against windmills believing I can never be hurt, much less defeated. I don't stop believing either, in spite of a very long list of ignominous defeats. I keep fighting, and I will not die easily, I am a warrior. Or as this song says "we're standing one an all, fighting till we fall, hoping for a better day, never giving in, till we find the words..."
http://www.youtube.com/watch?v=d1HuqP0nvuABut I would change those lyrics a little. The chorus says "no lost souls will live on forever". Since I could not hear it, my version was "the last words will live on forever". Because when you have battled the evil, heartless, almost unstoppable machine and won, then you have the last words and they will live on forever. "you're terminated fucker"
http://www.youtube.com/watch?v=lXUUtLv4sCg&feature=related