The development and prosperity brought about by the laws and decisions legislated by the Western modernist mind have brought about many misconceptions and problems. Under the complexities and challenges faced by modern man, adhering to true religion and divine revelation – which had been the authority of legislation and codification for a thousand years – has led to abandonment of rationalism, especially modernist rationalism. On this basis, this paper, using an analytical-critical approach, sheds light on this misconception by addressing the modern mind with its implications and consequences. A comparison is also made with Islamic rationalism in its high position, characteristics and dimensions that uncover the falsehood being fabricated against the adherence to the divine revelation. Among the results we have reached in this article, the modernist mind has been plagued by serious problems caused by its own Western modernist followers themselves who had sought another form of rationality. Moreover, Islamic rationalism, in general, does not oppose the consequences of modernist rationalism after revising its epistemological and practical problems.