当代科学引起人们既兴致勃勃又忧心忡忡甚至是恐慌的“矛盾情结” ,但这一“矛盾情结”所依据的前提却是未经反思的。本文通过科学作为话语系统的言说功能的反思 ,认为 :理性科学不可能穷尽人的存在与价值的全部奥秘 ,现实世界有理性科学“不可说”之处 ,科学技术走着与自然造化不同的道路。 Contemporary science arouses people's “ambivalent complex” of interest, anxiety and even panic, but the premise on which this “complex of contradictions” is based is unrepentant. In this paper, through the reflection of the discourse function of science as a discourse system, it is considered that it is impossible for rational science to exhaust all the mysteries of the existence and value of human beings, the “unspeakable” place of rational science in the real world, .