"What exactly is the end? The end. The en…" — Johann Liebert Quote

"I was only able to get back to being a real doctor by saving your life! I realized that human lives have equal value by saving you! Nobody has the right to take another's life! I've been living as a doctor with that engraved upon my heart for years!"

— Kenzo Tenma · Monster

"The big secret to breaking the rules is to make it look as though you're following them."

— Johann Liebert · Monster

"As long as we are under the same sky, we shouldn't be sad when we part ways."

— Wolfgang Grimmer · Monster

"Do you have any idea how terrible the things you did really mean? Do you understand what it means to destroy a human being's sense of good and evil? Can you even begin to comprehend what happens when you awaken the monster inside each us? People should know in their hearts that food tastes good. They should always look forward to having picnics and wonderful places on their weekends. They should think that beer tastes good after a hard day's work. People should know how they should feel, that they're suppose to grieve, from the bottom of their hearts when they have to bury their own child."

— Wolfgang Grimmer · Monster

"What is education? Isn't education meant to create a person that conforms to society? What kind of education must be administrated to create a human being that meets the society's demands? Education is an experiment."

— Mikhail Petrov · Monster

"You can't just erase people's feelings. It's as if my emotions were lost somewhere hundreds of miles away. It's as if they were sent long ago, in a letter that was always intended for me."

— Wolfgang Grimmer · Monster