Nothing we "know" can be "known".
Is this your rebound, to post more meaningless nonsense?
For every known there is an unknown...
Meaning what? What does this have to do with the topic?
For every "belief" there are facts and logic which derive belief.
You really don't need to be so vague. It's pretty clear that there is rational belief, which is supported by some logic (which may even be faulty) and then there is irrational belief, which is the belief that persists in the face of sufficient reasons against it. Except for true delusions (as in schizophrenia) the irrational mind is in deliberate denial of the facts, evidence and logic that would lead to a rational belief.
This does not mean the belief is accurate or intelligible to communicate to another. It is only important to understand the reason the person decided to create "purpose" from this belief.
As far as the questions concerning origins of the universe and of organisms are concerned, it reduces to a division between rational and irrational belief. The rational mind tries to stay reasonably informed, recognizing that inadequate facts and evidence can lead to false conclusion. That is, the rational mind seeks truth. The irrational mind ignores facts and evidence, at risk of falling into false conclusions. Truth is expendable.
For every "belief" there is a known and unanswered "why".
Since science is the method of explaining unknowns, it does no good to stop and declare that the facts supporting a belief remain unanswered. That's simply dodging science, and inevitably it's done to prop up a false, irrational belief.
For every unknown there is multiple people to argue "how" unknown.
More vague generalizing. You need only establish that people who bother to do the work to collect the answers remain the authorities on the subject, and the lazy people forfeit their rights to complain further.
Until someone asks a stupid question that appears to be an answer..
If that's an attempt to glorify stupidity, it's worthless.