法華玄論 1.124

1.124

答：一乘是佛因緣，無有諸佛不說佛乘。但說一乘自有二種：一者直說一乘，謂一因一果，如《華嚴》之□流；二者先說三乘後說一乘，即《法華》也。此二雖殊，一乘無異，是故一切諸佛皆說《法花》。涅槃教起，但為斥無常病故常樂。若眾生無有無常之病，即不須明常樂，是故佛或說《涅槃》或有不說也。

Answer: The one vehicle is the cause and condition of buddhas; there are no buddhas who do not preach the buddha vehicle. However, preaching the one vehicle of itself has two forms: first, directly preaching the one vehicle, namely one cause and one fruition, as in the lineage of the Avataṃsaka; second, first preaching the three vehicles and later preaching the one vehicle, which is the Lotus. Although these two are distinct, the one vehicle is without difference; therefore all buddhas preach the Lotus. The arising of the Nirvāṇa teaching is merely to reproach the sickness of impermanence, hence [proclaiming] permanence and bliss. If sentient beings had no sickness of impermanence, there would be no need to clarify permanence and bliss; therefore buddhas may preach the Nirvāṇa, or may not preach it.