《Knowing and Seeing》已备,惟非脚注所标第四版:所据为第二版电子书(BuddhaNet 流通,© W. K. Ng 2000,副题 Talks and Questions-and-Answers at a Meditation Retreat in Taiwan,311 面)。第四版之出版项(Kuala Lumpur: Wave Publications, 2003)尚未核实。惟正文第 74 行所述帕奥禅法三事,第二版已足坐实:(一)先止后观之序,书内第 72 页:观智之前有四清净,「It is only after we have thoroughly discerned mentality-materiality and their causes, that we can practise Vipassanā meditation」;
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(二)四禅那乃至八等至与遍处,第 63 页:「the ten kasiṇas, and the eight attainments consisting of the four fine-material jhānas and the four immaterial jhānas」;(三)贴近《清净道论》主干,第 18 页:正定一目于《清净道论》中「is explained in more detail as the four fine-material jhānas (rūpa-jhāna), the four immaterial jhānas (arūpa-jhāna) and access concentration (upacāra-samādhi)」。凡遇此本之零命中,不可据以论有无。尚有二事不出此书,记而未改:帕奥生年一九三四(1934 通检零命中);正文第 80 行所述两系人员流动与机构冲击,该行另有 一注承之,非本行所辖。