"...science, even pushed to its limits, always remains at a distance from action. Science is fragmentary, incomplete; it progresses slowly and is never finished; life cannot wait. Theories that are meant to promote living and acting are therefore compelled to run ahead of science and complete it prematurely. They are possible only if the demands of practice and vital necessities, such as we feel without any clear perception, push thought ahead of what science allows us to confirm. Thus religions, even the most rational and secularized, cannot and will never be able to dispense with a very special sort of speculation that, while having the same objects as science itself, could never be properly scientific: in it, the obscure intuitions of sensation and sentiment often take the place of logic."
Source:
The Elementary Forms of Religious Life, trans. C. Cosman, Oxford Univ. Press, p.326.