 Similarly, the text of the Second Analogy is also committed to the necessity and strict universality of particular causal laws. If the general causal principle (that every event b must have a cause a) is true, then, according to Kant, there must also be particular causal laws (relating preceding events of type A to succeeding events of type B) which are themselves strictly universal and  necessary.[9]  Kant maintains that, when one event follows another in virtue of a causal relation, it must always follow “in accordance with a rule” (A193/B238). Moreover, the “rule” to which Kant is here referring is not the general causal principle, but rather a particular law connecting a given cause to a given effect which is itself strictly universal and necessary (A193/B238–239): 