Misc: At the tip of which continent is Cape Horn?

Questions

"The interpretation of --------- is the royal road to a knowledge of the unconcious activities of the mind."- Sigmund Freud?

"If you copy from one author it's ------------. If you copy from two it's research."- Wilson Mizner?

"If you cross an ---------- with a Jehovah Witness, you get a fellow who knocks on your door for no particular reason."- Blanche Knott?

"If you don't know where you're going, you will probably end up ---------------."- Laurence Johnston Peter?

"Life is an incurable ----------."- Abraham Cowley?