One of the major problems encountered in time travel is not that of accidentally becoming your own father or mother. There is no problem involved in becoming your own father or mother that a broadminded and well-adjusted family can't cope with.
Douglas AdamsDirk turned on the car wipers, which grumbled because they didn't have quite enough rain to wipe away, so he turned them off again. Rain quickly speckled the windscreen. He turned on the wipers again, but they still refused to feel that the exercise was worthwhile, and scraped and squeaked in protest.
Douglas AdamsThe film project has been โtwenty years of constipation,โ and he likens the Hollywood process to โtrying to grill a steak by having a succession of people coming into the room and breathing on it.โ
Douglas Adams