"I prefer nothing, unless it is true."

"Great crimes and pure evil come only from vigorous natures perverted by upbringing; a weak nature never does anything great, good or evil."

"Must not all things at last be swallowed up in Death?"

"No matter how hard you fight the darkness, every light casts a shadow, and the closer you get to the light, the darker that shadow becomes."

"No one ever dies an atheist."

"Science is nothing but perception."