When you love something, you have to make sure it loves you back, or you'll bring about no end of trouble chasing it.
Patrick RothfussThe key to good worldbuilding is leaving out most of what you create. You, as the author, had damn well better know the where all that dragon food comes from, but that doesn't mean that I, as a reader, want to read a five thousand word essay about you explaining it to me. I don't need to see the math, but I can tell by the details you provide whether or not you've thought these things through to their logical conclusions.
Patrick RothfussThere is some conflict between religion and science in my world, but that's nothing new. Science, at its root, is a rational discipline. Religion, on the other hand, is fundamentally trans-rational. Both of them attempt to solve problems, but since their methodology is vastly different, they can't help but come into conflict.
Patrick Rothfuss