“you have not succeeded until you are finished”
“The truth will set you free. But not until it is finished with you.”
“You will never succeed until you want to as bad as one wants to breathe.”
“I have lived with you and loved you, and now you are gone. Gone where I cannot follow, until I have finished all of my days.”
“Have to? Of course you have to! But only because of you, Harry, won't rest until Voldemort is finished! Think now, for once, if you have never heard of the prophecy! What would you do?”
“If you are afraid to fail, then you are afraid to succeed. You can never succeed of you have not failed.”