William of Ockham - Sketch labelled "frater Occham iste", from a manuscript of Ockham's Summa Logicae, 1341
William of Ockham (ca. 1285-1349) was an English theologian and Franciscan monk. Today known as the originator of Occam's razor.
- Numquam ponenda est pluralitas sine necessitate
- Plurality is never to be posited without necessity.
- Quaestiones et decisiones in quattuor libros Sententiarum Petri Lombardi (ed. Lugd., 1495), i, dist. 27, qu. 2, K
- Okham cited in: William Thorburn (1918) "The myth of Occam's razor". In: Mind 27 (1918), 345-353.
- Frustra fit per plura, quod potest fieri per pauciora.
- Entia non sunt multiplicanda praeter necessitatem.
- Entities should not be multiplied beyond necessity.
- Though widely cited as Occam's razor, the popular wording is not found in his extant works.
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