<< At the top of Victory Road >>
Cheren: ...White. It's difficult... confronting myself. I keep noticing parts of myself I dislike, or even hate.
???: That's right. And no one can ever run from their true self.
(Marshal comes in.)
Marshal: My master told me about this, so I came to see. Do you understand? Even if you lose in battle... As long as you surpass your past self, you've still achieved a victory over yourself. So for that purpose, through battle, we see opponents! We see Pokémon! And we see ourselves!
Cheren: ...I suppose that's a line you're passing down from Alder?
Marshal: ...Well, yeah. What I want is to fight a Trainer who sees themselves that way... In associating with such a Trainer, I know I and my Pokémon would get even stronger... Well, I'll be awaiting your challenges at the Pokémon League! Cheren: ...Well then. Okay, White! Show me a Pokémon battle!
[Battle lines that you've already quoted]
Cheren: ...Fighting with so many Trainers and Pokémon... Once you establish what you are, a straightforward road materializes. And that road exists so that I can be myself. You and I both have Pokémon who are there for us. And our precious Pokémon walk these roads alongside us...