People live by faith.
So, what kind of beliefs does she and they have?
They walk in the darkness, unwilling and unable to pay attention to worldly prejudices and deep-rooted misunderstandings.
"Slytherin—the most cunning and cunning of all."
"Professor, do you believe this?"
"It makes no difference whether you believe it or not. I will never try to change things that I cannot change, including other people's thoughts."
"Yes, I understand." She closed her eyes gently, her expression covered by her hanging black hair, "You have always been like this."
Just like I firmly believe that this thin and steady figure is the real pride.
Because he never bowed his head until he died.
She was as proud as he was, but not as restrained as him. She also vented her anger in a terrifyingly cold tone: "I do not discriminate against mixed-races, never have. As you said, it is indeed disgusting to hold extreme prejudice against mixed-races and Muggles, but equally, the saying in your and your fathers' minds that 'Slytherins are all cunning, cunning and evil snot-nosed people' also makes me feel extremely disgusted!"
"He must like this light as much as I do. I have always believed that." Many years later, she faced the survivors and squinted at the green mountains and rivers. "Because a long-lost love is not enough to support him walking alone in the hellish darkness for so many years. Just like for him, it is not the only reason why I seek strength to fight against Voldemort. I love him. We also love this world -"
---------------------------------------A lifelong thought, a lifelong obsession.