The greatest lesson that you can ever learn is that you know nothing. The more you think you know, the less you do.

And anyone - anyone - who thinks they know who they are in the middle of a war is a fraud. Or a fool.

It is impossible to give yourself completely and retain your sense of self. That's why it is called a sacrifice. And every sacrifice sows a seed of doubt. If anything, the people most committed to their cause are often the most lost.

Hermione Granger would have been the first to disagree. But that was before.

Sometimes you don't know what you are giving up until it's gone.