Dalvin walked out coolly after leaving those words, sounding majestic and akin to a wizened elder unmoved by the tangles of youthful morality. However, those words were simply for the others to hear; Dalvin did not mean them in the least.
He wasn't a believer that great power equaled great responsibility, but rather that great power equaled great freedom. The point of working hard to gain power was for oneself and oneself only, not for the benefit of others.
Great power with great responsibility only referred to externally bestowed power like in politics, where you literally did have an obligation to do your work because that was the reason you were given power.
Dalvin's only responsibility for his power was loosely to Gaia, and that was even just to use the power as he saw fit with the caveat of not harming humans on Earth, because that was the only thing Gaia cared about.
