佛学大辞典

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an 'Independently Enlightened One'; or Separately or Individually (=pacceka) Enlightened One (renderings by 'Silent' or 'Private Buddha' are not very apt). This is a term for an Arahat (s. ariya-puggala) who has realized Nibba^na without having heard the Buddha's doctrine from others. He comprehends the 4 Noble Truths individually (pacceka), independent of any teacher, by his own effort. He has, however, not the capacity to proclaim the Teaching effectively to others, and therefore does not become a 'Teacher of Gods and Men', a Perfect or Universal Buddha (samma^-sambuddha). - Paccekabuddhas are described as frugal of speech, cherishing solitude. According to tradition, they do not arise while the Teaching of a Perfect Buddha is known; but for achieving their rank after many aeons of effort, they have to utter an aspiration before a Perfect Buddha.
Canonical references are few; Pug. 29 (defin.); A. II, 56; in M. 116, names of many Paccekabuddhas are given; in D. 16 they are said to be worthy of a thúpa (dagoba); the Treasure-Store Sutta (Nidhikhandha Sutta, Khp.) mentions pacceka-bodhi; the C. Nidd. ascribes to individual Paccekabuddhas the verses of the Rhinoceros Sutta (Khaggavisa^na Sutta, Sn.) - See bodhi. 更多：https://www.bmcx.com/
See The Paccekabuddha, by Ria Kloppenborg (WHEEL 305/307).