法華玄論 6.187

6.187

次辨為無為。舊解三車正譬有為。所以然者，車取運動故是車，無為無動故非車。大車亦爾。評曰：著譬大過，不尋經也。尋大小二車具有二文，合小車云「欲速出三界自求涅槃」，如彼諸子為求羊車出於火宅。合鹿車亦舉有為無為合之，則知三車具是有為無為。

Next is to distinguish the conditioned and the unconditioned. The old interpretation held that the three carriages specifically symbolize the conditioned. Why is this? A carriage takes movement as its meaning, so it is a carriage; the unconditioned has no movement, so it is not a carriage. The great carriage is also like this. I evaluate this: To cling to the parable is a great error, failing to examine the sūtra. Examining both the great and small carriages, there are two texts for both. The synthesis of the small carriages says: "Desiring to quickly escape the three realms and personally seek nirvāṇa," just as those sons sought the goat-carriage to escape the burning house. The synthesis of the deer-carriage also adduces both the conditioned and unconditioned to synthesize it; thus one knows that the three carriages possess both the conditioned and unconditioned.