Stoltenberg: We will retaliate with more democracy

We are only as strong as we are united, as weak as we are divided. Lord Voldemort's gift for spreading discord and enmity is very great. We can fight it only by showing an equally strong bond of friendship and trust. 

Differences of habit and language are nothing at all if our aims are identical and our hearts are open.
Harry Potter and the Goblet of Fire
Albus Dumbledore