摩訶止觀 2.109

2.109

復次，夷險兩路皆有能通，為難從險。善惡俱通，審機入蔽。汝棄善專惡，能通達非道，何不蹈躡水火、穿逾山壁？世間險路尚不能通，何況行惡而會正道，豈可得乎？又不能知根緣，直是一人即時樂善，即時樂惡，好樂不定，何況無量人邪？而純以貪欲化他？

Furthermore, both level and perilous paths can lead through; only because of hardship does one take the perilous one. Both the wholesome and the unwholesome can lead through; one assesses capacities before entering what is obscure. You abandon the wholesome and dedicate yourself exclusively to the unwholesome, claiming to be able to penetrate the non-path—why do you not tread upon water and fire, or pierce through mountain walls? If you cannot even pass through worldly perilous paths, how much less could it be possible to practice evil and yet accord with the correct Way? How could that be achieved? Moreover, you cannot know people's faculties and conditions: even a single person may at one moment delight in the wholesome and at the next moment delight in the unwholesome, their preferences being unstable; how much more so for countless people? Yet you would transform others purely through greed and desire?