"I contend that we are both atheists. I just believe in one fewer god than you do. When you understand why you dismiss all the other possible gods, you will understand why I dismiss yours." - Stephen Henry Roberts
"He who joyfully marches to music in rank and file has already earned my contempt. He has been given a large brain by mistake, since for him the spinal cord would fully suffice." - Albert Einstein
"All models are wrong but some are useful." - George Box
"It is impossible for a man to learn what he thinks he already knows." - Epictetus
Note that there is also a great Zen story about this idea.
"I am rarely happier than when spending entire day programming my computer to perform automatically a task that it would otherwise take me a good ten seconds to do by hand." - Douglas Adams