Quotes from "Naruto Shippūden"

Love is not necessary, power is the only true necessity.

I actually don't think something like perfection exists. That is I think why we are born able to absorb things... and by comparing ourselves with something else we can finally head in a good direction.

The past does not exist to remind us that the future cannot be changed. It exists to remind us what the future can be.

There is no telling what kind of pain will come after me, but... if I stop believing because of that, if the hero should change, it'll turn into another story from the one my master left behind. Then it wont be Naruto! I can't write novels like my master did. That's why the sequel has to come from the life I live no matter how great the pain, I'll continue walking because that's who Naruto is!

Sai said:

Even if I force myself to smile. It seems I'm the type of person who ends up being hated.

In this moment, I am euphoric. Not because of any phony Shinobi's blessing. But because, I'm enlightened by my intelligence.

Knowledge and awareness are vague, and perhaps better called illusions. Everyone lives within their own subjective interpretation.

Pain said:

Learn to embrace the fear of feeling about what it's like to contemplate what it is to know true pain. Because when I had nothing and no one - I always had Pain.

(About Sakura) Was she having fun in her little make-believe fantasy of true love? As for me, I have absolutely no reason to love her and likewise, I can see no reason why she would love me.

The longer you live... The more you realize that reality is just made of pain, suffering and emptiness...

It seems that you still want to dance but... You will not be able to make steps anymore.

I'd be lying if I said things are going according to my plan... but beggars can't be choosers, right?

[Last words to Hashirama] As comrades, huh... well... if that's how... we... will.... *smiles*

Pain said:

Feel pain, think about pain, accept pain, know pain... Shinra Tensei!