The authors of philosophy and scripture both come across as mounting a case to prove their own sanity. (Most all of it sounds at least a tiny bit bonkers.) Nowadays, the power of philosophy or scripture is also measured in the same way– by how successful these authors are in making this case.
Religion and politics are rooted in the belief that we should walk toward what the authors of scripture and philosophy were pointing at. Heroes and saints are those who walk in those directions with a vigor that most everybody would find a bit nuts. (Sort of like sports champions.)
Those who claim to believe in science alone are simply those who make the odd claim that the authors of science are the only sane people, that the only saints and heroes were scientists. This view will always appear crazy to the sane person whose heroes have always been cowboys. (The fact that such people even exist proves that this sort of scientific nihilism is flatly incorrect.)