[When] doctors treat sicknesses, [if] urgent, [they] thus treat [the] symptoms [first, if] unhurried, [they] thus treat [the] root [cause].
For example, [there] is [a] person [with the] throat obstructed [by] swelling, [with] drink [and] food difficult [to] enter, [and the] breath difficult [to] exit.
[There] must first [be] elimination [of] that swelling, thereafter then, [is it] possible [to] accordingly [treat] that sickness’ cause, [to] take care [of the] inner organs.
If not first eliminating that swelling, thus will [the] person immediately die.
Even if with, [for] treating [the] root [cause, a] good prescription [of] wonderful medicine, how will that [be] given [then]?
The [teachings on karmic] cause [and] effect, is today’s wonderful Dharma for eliminating [the] swelling [of evil-doing and suffering from evil in this world].
Certainly, [with this] one Dharma [of] cause [and] effect, [the] symptoms [and the] root [cause can] together [be] treated.
Beginners relying [on] it, can correct [their] evil [and] cultivate good.
Those with wide knowledge relying [on] it, can sever confusions [to] realise truth.
Thereupon penetrating [the] above [and] penetrating [the] below, from barren ground’s [spiritually inferior] ordinary beings, up to [those with the] perfect Buddha fruit, all [are] not able [to] depart [from] it.
How [then] can it [be for] treating symptoms only?
Pure Land Tradition’s 13th Patriarch Great Master Yìnguāng
(Reply letter to layperson Zhāng Bóyán)
Namo Amituofo : Translation by Shen Shi’an