Draco... you are no assassin.
Read more Professor Albus Dumbledore QuotesFrom: Harry Potter and the Half-Blood Prince (2009)
This memory is everything.
Be brave, Professor. Be brave like my mother... Otherwise, you disgrace her. Otherwise, she died for nothing. Otherwise, the bowl will remain empty... forever.
Albus Dumbledore : Severus... please...Severus Snape : Avada Kedavra!