Imperfect understanding is often more dangerous than ignorance.
Fantastic Beasts and Where to Find Them, J.K. Rowling
Fear of a name increases fear of the thing itself.
Albus Dumbledore, J.K. Rowling's Harry Potter and the Philosopher's Stone
It is impossible to live without failing at something, unless you live so cautiously that you might as well not have lived at all – in which case, you fail by default.
J.K. Rowling, "The Fringe Benefits of Failure, and the Importance of Imagination" (2008 Harvard commencement speech)
Let us step out into the night and pursue that flighty temptress, adventure.
Dumbledore, J.K. Rowling's Harry Potter and the Half-Blood Prince
It is the unknown we fear when we look upon death and darkness, nothing more.
Albus Dumbledore, J.K. Rowling's Harry Potter and the Half-Blood Prince
If you want to know what a man's like, take a good look at how he treats his inferiors, not his equals.
Sirius Black in Harry Potter and the Goblet of Fire, J.K. Rowling
You think the dead we love ever truly leave us? You think that we don't recall them more clearly than ever in times of great trouble?
Albus Dumbledore in Harry Potter and the Prisoner of Azkaban, J.K. Rowling