I second Dark Serge's analysis. Take the plot of Cross for example: Belthasar clearly has no problem with weighing the lives of thousands just to suit what he views as a moral action. He was probably unconcerned with the people in the domes because he realized that if he could somehow build a time machine, then either him or someone else could prevent this future from ever existing and all of those people would never exist in the first place anyways.
So, you're an old man and you're stranded in the future and you are the sole person who has the knowledge of how to build a time travelling device - what do you do? Do you waste your time trying to help the hopelessly starving people of the world, or do you put all of your energy and resources into the building of that time machine? A moral decision - Belthasar would have to weigh the lives of thousands against the entire future of the planet, a decision which he clearly has no trouble making again during Cross.