I love Douglas Adams quotes (even though it pisses off a few atheists to see a spiritual person use his quotes in their sig... lol). I found so many interesting ways of looking at life when reading his fictions. They were a true joy. Here's a sampling of some of my faves.
A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.
Anyone who is capable of getting themselves made President should on no account be allowed to do the job.
Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so.
The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair. (this one is my hubby's work sig, as it applies especially to downhole rig equipment. lol)
There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable.There is another theory which states that this has already happened.