Korosensei — memorable quote from Assassination Classroom

“The past you've lost will never come back. I myself have made so many mistakes... But we can learn from the past so we don't repeat it.”

“You must not hope for society to change for you. Do not reject society. To put it bluntly, that is simply a waste of time.”

“Whatever you lose, you'll find it again, but what you throw away you'll never get it back.”

“If you throw your life away, you won't even have the capacity to feel regret.”

“Sorry, a trick is nothing but a puzzle mankind came up with. If you use your head, you can uncover the logical answer. It’s disappointing. No matter the explanation I think of, I cannot understand why one person would kill another. Even if I can see why, I can’t understand why.”