The king expresses his astonishment at this exordium, which seems to him incoherent; but the Jew replies that the existence of God, the creation of the world, etc., being taught by religion, do not need any speculative demonstrations. Further, he propounds the principle upon which his religious system is founded; namely, that revealed religion is far superior to natural religion. For the aim of ethical training, which is the object of religion, is not to create in man good intentions, but to cause him to perform good deeds. This aim can not be attained by philosophy, which is undecided as to the nature of good, but can be secured by religious training, which teaches what is good. As science is the sum of all truth found by successive generations, so religious training is based upon a set of traditions; in other words, history is an important factor in the development of human culture and science.