二諦義 1.25

1.25

Question: If they do not expound the Dharma based on the four siddhāntas, what is the purpose of using the four siddhāntas? It is explained: The two truths are the basis; based on the two truths, they expound the teaching of the four siddhāntas. Here too there are two perspectives, each adopting one meaning to clarify [the matter]: expounding while being real is termed the "four siddhāntas"; being real while expounding is called the "two truths." That is to say, based on the two truths, because skillful means adapt to different conditions, there are four kinds of siddhāntas.