You can see that people can believe a lot of stuff. And often it is a mixed bag. So you can also see why after clarity was brought into nature and gravity by Isaac Newton, that people thought they could extend that same process to bring clarity into things like politics, or spiritual issues.
But the attempts of philosophy, nor of political science actually succeed. Still there has been some progress. Though it can not be proven, still it looks that Kant was right about the limits of reason. So that also places limits on what you can talk about in terms of spiritual matters. [I mean that logic has limits and also limits about what you can say about spiritual things.] And Politics also made great progress in the creation of the Constitution of the USA.
Some people noted that philosophy after Kant and Hegel [especially 20th century] went seriously off the wires, crash dived, wiped out. But as
Robert Hanna made note of, much of the effort to get things back on track was ignored. John Searle made a famous comment about most of twentieth century philosophy, "It is obviously false."
[I am not sure why Robert Hanna does not mention Leonard Nelson or Hegel.]
[Robert Hanna came up with the idea "Forward To Kant" but does not hold from the Neo-Kant School of thought-- Marburg. So what about Leonard Nelson? Or Hegel? Now Hegel tends to be a bit obscure, however he becomes clear with McTaggart. [I only learned McTaggart a little bit but mainly I saw his commentary on Hegel's
Logic--that is the part of his Encyclopedia.] So I think after you would throw out twentieth century philosophy, you would still end up with having to get back to Nelson and McTaggart.