“It feels like time is passing so quickly. Damn you, Einstein! Your science is crowding in on our kiss! He was right. The passage of time depends entirely on where you're standing. Relativity Theory... it's so romantic. But it's just so tragic too.”
“Every brilliant day should be lived for those who passed away.”
“Everyone is watching someone other than themselves, someone important to them...”
“People's feelings are memories that transcend time.”
“[after kissing Okabe] There was a scientific rationale for that! Because... important memories, including, but not limited to, one's first kiss, are stored in the hippocampus, which makes them harder to forget. So I figured...”
“I am a scientist, I have to act on my own theory. I can't let my emotions get in the way. But it's impossible to forget everything... because I've known you for longer than we've lived. This is reality. This is the world.”
“You can run away, but that'll just make it worse!”
“I've only lived 18 years, but I don't want to change any of them. They're all part of my life, even the failures.”
“Even if the world line changes, as long as you don't forget me, I'm there.”
“You know, Okabe, whether time is slow or fast, depends on perception. Theory of relativity is so romantic.”
“Maybe there are copies of me on countless world lines. Maybe all their minds are connected, forming a single "me." That sounds wonderful, don't you think? Being in all times and in all places. A strong love for someone... a strong belief in something... a strong desire to convey something... If all those things go beyond time to create "you"... ...then that would be magnificent. So don't think of it as letting me die. Even if the world line changes, as long as you don't forget me, I'll always be there. ... I'm sure that from now on you're going to suffer. You'll be in a world where no one but you remembers me. You care more about your friends than anything else, so I think it's going to be painful for you. I'm so sorry. But that pain will mean a lot to me. Whenever you're sitting around in the lab, whenever you sip a drink, whenever you walk around town ... it doesn't have to be every time - one time out of a hundred is fine. All I ask is that you remember me ... because I'll be there. I'll always be there.”