The only thing we need to sustain is the freedom to act on our judgment-which includes the freedom to use our property as we see fit. As long as we are free, we can keep the lights on and continue figuring out how to make them cheaper and brighter.
Rational egoism is the only morality that is for human life; thus, it is the only morality that is actually moral. Those who choose to be rationally self-interested thereby make the most of their life - and they are morally good because of it.
The future must not belong to those who treat faith as a means of knowledge. The future-if peace is to be a part of it-must belong to those who acknowledge that man’s only means of knowledge is reason.