Batou and Mokoto in “Unfinished Business”

Batou

By the way, I have something that almost didn't make it here. [Batou pulls out a wrist watch]

I knew it.

Batou

No matter how many prosthetic bodies you've went through this was the one thing that was always ticking away, keeping the same time as you. Nowadays thats far to fleeting, people entrust their memories to external devices because they want to set down solid physical proof that can distinguish them as unique individuals. That watch is all you have though, isn't it? Your only external mnemonic device that identifies the person you've been up to this minute.

Those are pretty serious words, where'd you get them from I'd like to know. A watch and weight training gear, both of us have clung to useless scraps of memory, haven't we?