Do not go upon what has been acquired by repeated hearing; nor tradition; nor rumor; nor what is in a scripture; nor surmise; nor axiom; nor specious reasoning; nor bias towards one’s beliefs; nor upon another's seeming ability; nor upon the consideration, 'The monk is our teacher.' When you yourselves know: 'These things are good; these things are not blamable; these things are praised by the wise; undertaken and observed, these things lead to benefit and happiness,' enter on and abide in them.
The poem is about the nature of difference and the paradox that there is no difference. It presents the Buddha as being able to see everything. The paradox, however in his case, is a layered process of realization. First one sees difference. Then one realizes that the difference is not there. There is no distinction for all the differences of realization happen to be part a single realization. But after the context is put into the words, the difference and the paradox that “one-ness” is a multiplicity. It can only be understood as an infinite amount of “ones.” The Buddha realized this and taught this.