Squealer: “My Kind Are Neither Slaves Nor Beasts.” Judge: “If You’re Not Beasts, Then What

We do not live in a fairy-tale world. We cannot simply take revenge on those who have betrayed us and say "the end". We have to live on after this. And taking revenge for betrayal only invites more revenge.

Kraft Lawrence from Spice and Wolf

Humans are bitter creatures. Trapped in the darkness of ignorance, they cannot escape.

Monk Seishin Muroi from the anime Shiki

Aren't we all monsters on the inside?

Lucy from Elfen Lied

Examined from another angle, your faults and weaknesses can be your weapons.

Shiota Nagisa from Assassination Classroom

The real hell exists inside a person.

Enma Ai from the anime Jigoku Shoujo or Hell Girl