Duniyar ruhaniya tana wanzuwa ne kawai a cikin al'ummar ɗan adam. Shin dabbobi suna da duniyar ruhaniya? Gwaje-gwaje sun nuna cewa dabbobi masu girma, irin su primates da cetaceans, suna da manyan ayyuka na jijiyoyi, suna iya koyo da tunawa, har ma suna jin soyayya da ƙiyayya, amma bayan duk, sun kasance ƙasa da ɗan adam kuma ba su isa su samar da wani abu ba. cikakkiyar duniya ta ruhaniya. Duniyar ruhaniya wani nau'i ne kawai na bayyanar da duniyar abin duniya da ci gaba na motsin rayuwa. Kimiyyar Halittu da fasaha shine tsarin ka'idar da kuma hanyar fasaha don nazarin duniyar rayuwa. Tsare-tsare ce ta fahimtar duniyar rayuwa. Tunda duniyar ruhaniya ita ce ci gaban nau'in motsin rayuwa, duk nasarorin da aka samu na wayewar ruhi ba makawa za su ƙunshi ra'ayin rayuwa kuma a kimanta su ta hanyar kimiyyar halitta. Don haka, kimiyyar rayuwa wani muhimmin tushe ne na samar da kimar kimiyya.