Western natural science, arising from philosophical secularism, is a potent perpetuator of secularism. Greeks view of reality, was paradoxically strengthened by Christian denigration of nature and reason and by the later, successive European stances of anti-theologism, anti-metaphysicism and scientism. Islam, by seeing the unity of reason-intuition and nature- ghayb posits scientific and spiritual meaning in nature. Western secular science has produced spiritual and natural crises while the holistic, Islamic science resolves them. The desecularisation and Islamisation of society together with the resolution of science-generated crises demands a fundamental criticism of western science and the emergence of a healthier science.