'I Don't Understand' - Hatoko Kushikawa [Episode 7, 11:05 - 13:30]
This is really more of a rant than a speech, but the delivery is so good, I couldn't in good conscience leave it off. This is probably the most empassioned two and a half minutes of voice acting I've ever heard, bursting with raw emotion. Our speaker is pouring out all the emotions she's kept bottled up for years, growing more and more frantic with every word. Far and away the highlight of the series.
'Because We're Gamers' - William Massachusetts [Episode 10, 3:35 - 19:40]
Man, this is a long one. You can cut out a couple of minutes at the start and end where he's responding more directly to the raid members, but there is a bit in the middle with Demikas [15:25 - 16:05] that's kind of essential. This is actually pretty darn inspiring, especially for the anime fan / gamer crowd that this is clearly targeting.
'I am Human' - Elder Sister Maid (as the Demon Queen) [Episode 9, 10:30 - 16:30]
It isn't perfectly uninterrupted, with a few comments by the onlookers and the Messenger, but those are relatively short compared to the six minutes of talking the Elder Sister Maid does. She speaks to the unfairness of the world to serfs like her, the value of all human life, the agency of humans, and the indomitable human spirit. It truely is an inspiring speech, telling people that they can aspire to more; that they don't have to accept the life they were dealt by fate.
'Sieg Zeon' - Gihren Zabi [2:12:20 - 2:14:45]
I've heard this speech compared to space Hitler, and... yeah, that seems appropriate. Talk of 'chosen people' and 'gathering hatred' and 'turning grief into rage' abounds. It's an impassioned speech, if slightly terrifying. Unfortunately, he gets talked over by other characters in parts, but you can still pick out the words mostly.
'Humanity Takes to the Stars' - Hoshino Yumemi [Episode 3, 9:40 - 14:10]
This is really less a speech and more a presentation, but in the show the visual accompaniment is supposed to be broken anyways, so it still kind of works. It's absoluetly dripping with hope for the future. In the show it comes across as sad because the future failed to find that peace, but in our world, it can still be presented as sincere.
'Please Help Me' - Lenessia El Arte Cowen [8:40 - 11:00]
Fairly short and simple in concept: Lenessia needs help to save her kingdom, but she has nothing to offer the adventurers. All she can do is appeal to their good will and common decency. Plus, the whole thing is staged in a way to best appeal to the crowd. The speech is a bit show specific though, with lots of proper nouns used.
'The Light of Hope' - Juliana [Episode 6, 18:45 - 21:15]
It's pretty fantastical, talking about "holy kingdoms" and the like, but it's not really specific to the series. Personally, I didn't find it particularly inspiring, but you can tell that they're trying. The best part is probably how the speech is intercut with shots of the hero falling into darkness. There's one moment at the beginning where she is briefly interrupted by jeers from the crowd, but it's not a big deal.
'The Horse' - Bell [Episode 2, ??? - ???]
Most of the speech does a good job of being pretty universally relatable, using Bell's relationship with his horse as a metaphor for other relationships between humans. The second half starts talking about dragons and dentists, but that could be edited if needed.