Rivers know this: there is no hurry. We shall get there some day.
The brick walls are there for a reason. The brick walls are not there to keep us out. The brick walls are there to give us a chance to show how badly we want something. Because the brick walls are there to stop the people who don't want it badly enough. They're there to stop the other people.
You may encounter many defeats, but you must not be defeated. In fact, it may be necessary to encounter the defeats, so you can know who you are, what you can rise from, how you can still come out of it.
Never, never, never give in!
There are times to stay put, and what you want will come to you, and there are times to go out into the world and find such a thing for yourself.
If you are going through hell, keep going.
I have not failed. I've just found 10,000 ways that do not work.
Ever tried? Ever failed? No matter. Try again. Fail again. Fail better.
It was the tension between these two poles - a restless idealism on one hand and a sense of impending doom on the other - that kept me going.
It was important, Dumbledore said, to fight, and fight again, and keep fighting, for only then could evil be kept at bay, though never quite eradicated.