Basically, a while ago there were different world views. Paganists, different religions, non monotheistic ones too. There were spheres of thought that intersected, but some that did not at all. But the one that intersected most was the kaballah lore (thus it appealed to a LOT of people)
The kaballah lore has a basic premise of universal solipsism. To that of you being gawd, but your neighbor also, but also the grass, your car. Basically everything is god and it came from god as it split up.
It is partly wishful thinking, but also partly a genuine attempt at understanding the universe. Many heralds of the ideologies grew insane or bored with the lore and just started looking with angry eyes on those who wanted to do more.
The people who have this kaballah lore also have these other intersecting ideologies. To that of universalism, big bang or whatever. The lower races who do not think like this at all just see a big opportunity of the ones who control the world to advance and to breed and thus they (pretend) to accept it.
But much much apart from that there are also groups who may say things like "what if the universe does not contract or expand, what if the heat death, entropy is not the end point and what if the universe just existed for forever". Completely contradicting the "we all come from one" ideologies.
There are many scientific things that are examined through this wishful thinking, but also many which are not. Eliminating this human bias has been quite important, but ideology ties in with economy, industry, warfare, ethnic tensions and this kaballah lore has become so popular because the people who have it (the jews) have no other means to keep control of the world (to some degree)
National socialism is another very, VERY potent counter agent to this ideology as its purest form loves other races, and if executed and trained properly can function even better than the kaballah lore for the whole world.