"Is anything ever truly wasted?"

"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."

— Korosensei · Assassination Classroom 2nd Season

"Well I do have abilities you haven't yet been given, just like not everyones has the strengths you do."

— Asano Gakuho · Assassination Classroom 2nd Season

"All of the connections we encounter in this world serve as teachers who nurture us."

— Korosensei · Assassination Classroom 2nd Season

"Some of us showed a strength we didn't expect. Some of us went ballistic like we thought they would, some got all fired up for next time and some irresponsible- lookin' types turned out to be crazy serious. The guy we thought was just a little runt turned out to be a genius assassin, and a guy we thought was a genius was secretly workin' hard all along. With all these different skillsets...we just might be able to handle any challenge that comes our way."

— Ryōma Terasaka · Assassination Classroom 2nd Season

"I study too, you know. How could I teach anyone if I didn't grow and learn day by day. Now let's get rid of this dangerous cloth. Experiencing my Absolute Defense Form over summer vacation taught me yet another skill: compressing not my whole body, but a portion of my tentacles to release a burst of energy. Remember this Itona, I say assassination is education. The assassination classrooms teacher will get stronger every time he teaches!"

— Korosensei · Assassination Classroom 2nd Season

"Take advantage of what you have, while you have it."

— Korosensei · Assassination Classroom 2nd Season