Modern Theological science is a substantiation of religious dogmas with due regard for contemporary intellect; or a presenta-tion of Islamic teachings according to modern rational methods. First of all, we must ascertain exactly what this contemporary intel-lect is. Contemporary intellect is synonymous with scientific intel-lect, or that intellect which emphasizes the importance of the essen-tial nature of things. The scientific revolution has had a profound effect on human thought. Due to it theories are required to be based on experiment and observation rather than on hypothesis and analogy. The upheaval of the present age has occurred because of the discovery of the realities of nature. All things, from the bicycle to the aeroplane, from light bulbs to huge factories, operate on the basis of these natural realities. This is the revolution which has, in fact, stolen the limelight in our modern age, for it has affected every department of human life, and has likewise altered modes of speech. For thousand of years man was engaged in a futile attempt to turn iron into gold by means of highly secret formulas. Now, thanks to the discovery of natural realities iron is converted into machines more precious than gold. Under these conditions added credibility supported by theories proven by the realities of nature is only to be expected. Since the progress of modern man has been due to his discovery of realities, he is bound to attribute importance only to that theory which is supported by these realities. This difference between the modern and ancient intellect may be understood by means of a simple example. Some fifty years ago such terms as "family prescription", "hereditary cure", "royally mixed medicine" etc., used to carry great weight with physicians. If any of these terms were used with respect to any medicine or tooth-powder, it meant that it contained hidden properties. Nowadays, however, these terms have no value. Today's doctor will not use this outmoded terminology when explaining the efficacy of a certain medicine. Rather he will point out that this product has been pre-pared scientifically and that its advantages have been ascertained by means of established evidence and experiments, the validity of which can always be tested by repetition. The very phrase "family cure" implies that its medicinal properties are not open to general investigation and that the connection between illness and cure has not been ascertained by any specific experiments. Rather its ac-ceptability is attributable to its wide usage over a long period of time. Today's customer seeks that product which has been man-ufactured on scientific lines. Likewise it is only those ideas whose truth is verified by natural realities that he is ready to accept.