I don't go looking for trouble. Trouble usually finds me.

It is our choices that show what we truly are, far more than our abilities.

If you want to know what a man's like, take a good look at how he treats his inferiors, not his equals.

It is the unknown we fear when we look upon death and darkness, nothing more.

Of course it is happening inside your head, Harry, but why on earth should that mean that it is not real?

“He must have known I'd want to leave you."
"No, he must have known you would always want to come back.” 

Where your treasure is, there will your heart be also.

"After all this time?" 

"Always," said Snape.