in the First House (the house of identity) is like having an open wound for the world to see. In Snape's case, his First House Sun and Saturn sitting so close to his ascendant act as a blanket ...
The world of Harry Potter has many complex relationships, with some being more iconic than others, like Lily Potter and Snape.
There are many instances in the series where it is Severus Snape himself who stands out as the best character.