“You'll do what you think you want to do, or what you think you ought to do. If you're very lucky, luckier than anybody I know, the two will coincide.”

“Perhaps you still think you ought to think out beforehand and know what you ought to do. To that there is only one answer. You can only know and think about it by actually doing it.”

“You can't know now what the results will be in the future. So for now, don't even think about it. Think about what you want to do and what you can do. That's very different from 'running away'. What do you want to do?”

“PROCRASTINATION means you know what you need to do and you don't do it. If you don't know what to do, you aren't procrastinating. You're thinking. ”

“Do you—do you think I want to—do you think I give a—I DON'T CARE WHAT YOU HAVE TO SAY!" Harry roared."You will," said Dumbledore sadly. "Because you are not nearly as mad at me as you ought to be. If you are to attack me, as I know you are close to doing, I would like to have thoroughly earned it.”

“I hope you're as lucky as I am. The world needs inventors--great ones. You can be one. If you love what you do and are willing to do what it really takes, it's within your reach. And it'll be worth every minute you spend alone at night, thinking and thinking about what it is you want to design or build. It'll be worth it, I promise.”