The 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 RothfussIt's not prowess if you watch 5 hours of TV a day. It's just how you choose to spend your time.
Patrick RothfussYou never do things the easy way, do you?" she said. "There's an easy way?" I asked.
Patrick RothfussWriting a good query letter has very little to do with writing a good novel. But if you can't write the one, it makes it really hard to get the other published.
Patrick RothfussWords are pale shadows of forgotten names. As names have power, words have power. Words can light fires in the minds of men. Words can wring tears from the hardest hearts. There are seven words that will make a person love you. There are ten words that will break a strong man's will. But a word is nothing but a painting of a fire. A name is the fire itself.
Patrick RothfussShe reached up and lay her hand on my cheek. "You have the sweetest face," she said, looking at me dreamily. "It's like the perfect kitchen." I fought not to smile. This was the delirium. She'd fade in and out of it before the profound exhaustion dragged her down into unconsciousness. If you see someone spouting nonsense to themselves in an alleyway in Tarbean, odds are they're not actually crazy, just a sweet-eater deranged by too much denner. "A kitchen?" "Yes," she said. "Everything matches and the sugar bowl is right where it should be.
Patrick Rothfuss