Osa quotes from Hell's Paradise: Jigokuraku (newest)

Osa: Shinobi Rule Number 20. If you are facing death, then draw on whatever you have left to deal as much damage as possible to the enemy before dying.

Osa: Behold, young Gabimaru. Look upon weakness. Your parents indulged in sentiment. That, in itself, made them weak. If you're not strong, you won't be capable of protecting anything. Such as children... and all else that is dear to us.