Dune, by Frank Herbert
Foundation, by Isaac Asimov
"So you are going to relax, cher ami. You are determined to hide your trembling, achieve a few moments of silence, begin smoking one of your delightful cigarettes, and then after this appropriate expenditure of precious time and in the midst of your composure, then you will attempt to dissuade me, to talk me back to sanity (as you will express the idea), to appeal to my kindness and good sense. I approve. I am listening. The hour is yours. But of course you may use the lighter. Only reach for it slowly and keep in mind my warning. Do not be deceived by my good nature. I am as serious as a sheet of flame."