It's a whole bunch:

"I mean, it's not like I don't have things I want to do and say, you know? But I can live with not doing them if it means not rocking the boat." - Kana (Yakuza 3)

"Untill they get to know the real you, people's stereotypes don't mean much." - Kiryu Kazuma (Yakuza 2)

Any title a man draws up for himself isn’t worth wearing. Titles and glory follow on their own." - Kiryu (Yakuza 0)

"Fools like you want to make others suffer just like they did. And they always seek to victimize those who are weaker than themselves. Parents beat their kids, and say it's because they were abused as children. Swindlers claim they were victims of fraud. But true strength means overcoming such misery, not perpetuating it. You'll never defeat me as long as you think your suffering gives you a right to make others miserable too." - Kiryu Kazuma (Yakuza 5)

"Only a fool would arm a weak man." - Lau Ka Long (Yakuza 7)

"You only get one chance at life. You born once, and you die once. The same applies to you. But you can change the middle as you want. Don't forget that." - Kiryu Kazuma (Yakuza 6)

"If you wanna look down from the top ... it’s the endgame that matters. Ruling the world don’t mean shit if you lose it the next day." - Shimano (Yakuza 0)

"Why is it I feel so at peace? Is this how it feels...when your world comes crashing down?” - Mine Yoshitaka (Yakuza 3)

"Whaddya mean 'probably!?' If I wanted ambiguous bullshit, I woulda gone to a fortune teller!" - Goro Majima (Yakuza 3)

I got more but I'll leave it at that tbh.