There are many instances in the series where it is Severus Snape himself who stands out as the best character.
2 We see this also when Snape explains to Bellatrix why he prevented Quirrell from retrieving the stone, he said: "[Voldemort] was in a pitiable condition, very weak, sharing the body of a ...
Severus Snape made the Unbreakable Vow to Narcissa Malfoy at Bellatrix Lestrange's suggestion. It was meant to ensure that he wouldn't do anything against Draco's best interest and that he would ...