"~desu" - Suiseiseki, Rozen Maiden. lol!
Nah, going serious:
"You lose the same time doing it right than doing it bad" - Anymous. My grandpa said that to me, so maybe he did it
"If you don't want it to be known, don't do it" - Same XD lol. My father says that to me always
but ~desu will always win