"Nothing is evil which is according to nature." - Marcus Aurelius
"So far as we are human, what we do must be either evil or good: so far as we do evil or good, we are human: and it is better, in a paradoxical way, to do evil than to do nothing: at least we exist." - T.S. Eliot 
"Woman thou art the gate of the devil. It is thou who hast corrupted those whom Satan dare not attack face to face" - Tertullian
"What is evil to one at one time, becomes good at another time to somebody else." - Sivananda
Kids! Bringing about Armageddon can be dangerous. Do not attempt it in your own home. - indica of "Good Omens", Terry Pratchett
...the Patrician did permit the unrestricted hurling of rotten fruit at anyone suspected of belonging to a street theater group. - "Soul Music," Terry Pratchett
"Never build a dungeon you wouldn't be happy to spend the night in yourself. The world would be a happier place if more people remembered that." - Lord Vetinari, "Guards! Guards!", Pratchett
...any wizard bright enough to survive for five minutes was also bright enough to realise that if there was any power in demonology, then it lay with the demons. Using it for your own purposes would be like trying to beat mice to death with a rattlesnake. - "Eric," Pratchett
"Multiple exclamation marks are a sure sign of a diseased mind." - "Eric," Terry Pratchett
Names are not always what they seem. The common Welsh name Bzjxxllwcp is pronounced Jackson. – Mark Twain.
"Very well, if there's nothing further, Bob Dole will now read from the Necronomicon." - Mr Burns, the Simpsons.
"Archaeology is the search for fact, not truth." - Indiana Jones and the Last Crusade
"'X' never, ever marks the spot." - Indiana Jones and the Last Crusade
"'When Alexander saw the breadth of his domain, he wept for there were no more worlds to conquer.' The benefits of a classical education." - Hans Gruber, 'Die Hard'
"...you were unhinged. You were like some desperate, howling demon. You frightened me.  Do it again!" - Morticia, The Addams Family [Movie].