1."The dumber people think you are, the more surprised they're going to be when you kill them. 
(William Clayton)

2."Does confusion come with an itchy head?"

3."Do not meddle in the affairs of dragons, because you are crunchy and taste good with ketchup."

4."Rome did not create a great empire by having meetings, they did it by killing all those who opposed them."

5."Some people play hard to get.  I play hard to want."

6."We do not have to visit a madhouse to find disordered minds; our planet is the mental institution of the universe." 
(Johann Wolfgang von Goethe)

7."I would like to find the person who invented sex and see what he's working on now."

8."The world is full of wonderful, diverse individuals and we must accept them as they are...even if most of them are quite stupid."
(Derek Strembicke)

9."Experience is that marvelous thing that enables you to recognize a mistake when you make it again."
(F.P. Jones)

10."You can speak your mind, but not on my time."
(Billy Joel, My life)